Precalculus Quiz and Discussion
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Week 4 "Trigonometric Functions" Take Test: W4 MidtermH
Take Test: W4 Midterm
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In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.
( , ) Find csc t.
QUESTION 1 2 points Save Answer
Solve the system of equations by substitution.
x = 1, y = 0; (1, 0) x = 0, y = 0; (0, 0) x = 1, y = 1; (1, 1)
QUESTION 2 2 points Save Answer
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x = 1, y = 1; (1, 1) x = 0, y = 1; (0, 1)
Perform the indicated operation(s), whenever possible.
Let A = , B = and C = . Find A + B C.
QUESTION 3 2 points Save Answer
Find the exact value of the indicated trigonometric function of θ.
sin θ = , tan θ > 0 Find sec θ.
QUESTION 4 2 points Save Answer
Find the exact value of the indicated trigonometric function of θ.
cos θ = , tan θ < 0 Find sin θ.
QUESTION 5 2 points Save Answer
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In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.
( , ) Find sin t.
QUESTION 6 2 points Save Answer
Find the domain of the function.
f(x) = {x|x ≤ 23} {x|x ≤ } {x|x ≠ } {x|x ≠ 23}
QUESTION 7 2 points Save Answer
Perform the indicated operation(s), whenever possible.
Let A = and B = . Find A + B.
QUESTION 8 2 points Save Answer
QUESTION 9 2 points Save Answer
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Perform the indicated operation(s), whenever possible.
Let A = and B = . Find A B.
[‑2]
QUESTION 9 2 points Save Answer
Compute the product.
[5 ‑1 ‑6]
QUESTION 10 2 points Save Answer
In the problem, sin θ and cos θ are given. Find the exact value of the indicated trigonometric function.
sin θ = , cos θ = Find csc θ.
4
QUESTION 11 2 points Save Answer
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4
Find the exact value of the expression if θ = 45°. Do not use a calculator.
f(θ) = cos θ Find 5f(θ).
QUESTION 12 2 points Save Answer
Solve the system of equations by substitution.
x = 0, y = 10; (0, 10) x = 10, y = 10; (10, 10) x = 10, y = 0; (10, 0) x = 0, y = 0; (0, 10)
QUESTION 13 2 points Save Answer
Find the value for the function.
Find f(2x) when f(x) = .
2
QUESTION 14 2 points Save Answer
Compute the product.
QUESTION 15 2 points Save Answer
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not defined
Find the exact value of the expression if θ = 45°. Do not use a calculator.
g(θ) = cos θ Find [g(θ)]2.
2
QUESTION 16 2 points Save Answer
Name the quadrant in which the angle θ lies.
sec θ < 0, tan θ < 0 I II III IV
QUESTION 17 2 points Save Answer
Perform the indicated operation(s), whenever possible.
Let A = and B = . Find
QUESTION 18 2 points Save Answer
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Find the domain of the function.
{x|x ≥ 6} all real numbers {x|x ≠ 6} {x|x > 6}
QUESTION 19 2 points Save Answer
Solve the system of equations by substitution.
x = 6, y = 6; (6, 6) x = 7, y = 7; (7, 7) x = 7, y = 7; (7, 7) x = 6, y = 6; (6, 6)
QUESTION 20 2 points Save Answer
Find the exact value of the expression if θ = 45°. Do not use a calculator.
g(θ) = sin θ Find 6g(θ). 6 3
3 6
QUESTION 21 2 points Save Answer
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.
QUESTION 22 2 points Save Answer
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cos
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.
sin
1
QUESTION 23 2 points Save Answer
Compute the product.
QUESTION 24 2 points Save Answer
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Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.
tan 720° 1 0
undefined
QUESTION 25 2 points Save Answer
In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.
( , ) Find csc t.
QUESTION 26 2 points Save Answer
In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.
( , ) Find cos t.
QUESTION 27 2 points Save Answer
Perform the indicated operation(s), whenever possible.
QUESTION 28 2 points Save Answer
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Let A = and B = . Find A B.
Find the value for the function.
Find f(x) when f(x) = |x| + 9. |x| + 9 |x| ‑ 9 |x| ‑ 9 |x| + 9
QUESTION 29 2 points Save Answer
Perform the indicated operation(s), whenever possible.
Let A = and B = . Find A B.
QUESTION 30 2 points Save Answer
Compute the product.
QUESTION 31 2 points Save Answer
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not defined
In the problem, sin θ and cos θ are given. Find the exact value of the indicated trigonometric function.
sin θ = , cos θ = Find sec θ.
QUESTION 32 2 points Save Answer
Compute the product.
QUESTION 33 2 points Save Answer
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Compute the product.
not defined
QUESTION 34 2 points Save Answer
Solve the system of equations by substitution.
x = 7, y = 12; (7, 12) x = 12, y = 2; (12, 2) x = 3, y = 7; (3, 7) x = 2, y = 3; (2, 3)
QUESTION 35 2 points Save Answer
Find the value for the function.
Find f(x + 1) when f(x) = .
QUESTION 36 2 points Save Answer
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Name the quadrant in which the angle θ lies.
sin θ > 0, cos θ > 0 I II III IV
QUESTION 37 2 points Save Answer
Name the quadrant in which the angle θ lies.
cos θ > 0, csc θ < 0 I II III IV
QUESTION 38 2 points Save Answer
Find the domain of the function.
g(x) =
all real numbers {x|x ≠ 0} {x|x > 49} {x|x ≠ 7, 7}
QUESTION 39 2 points Save Answer
Solve the system of equations by substitution.
x = ‑3, y = ‑3; (‑3, ‑3) x = ‑3, y = 3; (‑3, 3) x = ‑3, y = 0; (‑3, 0) x = 3, y = ‑3; (3, ‑3)
QUESTION 40 2 points Save Answer
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Find the domain of the function.
h(x) =
{x|x ≠ 2} {x|x ≠ 0} all real numbers {x|x ≠ 8, 0, 8}
QUESTION 41 2 points Save Answer
Find the exact value of the indicated trigonometric function of θ.
cot θ = , cos θ < 0 Find csc θ.
QUESTION 42 2 points Save Answer
In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.
( , ) Find cot t.
QUESTION 43 2 points Save Answer
Find the value for the function.
2
QUESTION 44 2 points Save Answer
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Find f(x 1) when f(x) = 5x2 + 5x ‑ 6.
5x2 ‑ 5x ‑ 6
5x2 ‑ 25x + 4
5x2 ‑ 5x + 4
‑5x2 + 5x ‑ 6
Find the value for the function.
Find f(‑x) when f(x) = 2x2 ‑ 2x ‑ 4.
2x2 + 2x + 4
2x2 + 2x ‑ 4
‑2x2 + 2x + 4
‑2x2 + 2x ‑ 4
QUESTION 45 2 points Save Answer
Name the quadrant in which the angle θ lies.
tan θ < 0, sin θ < 0 I II III IV
QUESTION 46 2 points Save Answer
Name the quadrant in which the angle θ lies.
cot θ > 0, sin θ < 0 I II III IV
QUESTION 47 2 points Save Answer
Solve the system of equations by substitution.
x = 1, y = ‑8; (1, ‑8) x = 1, y = 8; (1, 8) x = 1, y = ‑8; (1, ‑8) x = 1, y = 16; (1, 16)
QUESTION 48 2 points Save Answer
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x = 1, y = 16; (1, 16)
Solve the system of equations by substitution.
x = 3, y = 9; (3, 9) x = 3, y = 8; (3, 8) x = 2, y = 8; (2, 8) x = 2, y = 9; (2, 9)
QUESTION 49 2 points Save Answer
Perform the indicated operation(s), whenever possible.
Let A = and B = . Find
QUESTION 50 2 points Save Answer