three questions (2,7,13)

Current Score : 170 / 200 Due : Thursday, December 19 2013 11:59 PM C ST

1. 10/10 points | Previous Answers aufcat7 0.4.004.nva

Factor out the GCF from the polynomial.

2. –/10 points AufC AT7 5.4.027.

Use a calculator to find an approximate value of the function. Round your answer to the nearest ten-thousandth.

3. 10/10 points | Previous Answers aufcat7 6.2.053.nva

Verify the identity.

Use the Sum Identity for tangent functions, evaluate all possible terms, and simplify.

4. 10/10 points | Previous Answers AufC AT7 6.6.016.

Solve the equation for solutions in the interval 0 ≤ x < 2π. Round approximate solutions to the nearest ten-thousandth. (Enter your

answers as a comma-separated list. Enter all answers including repetitions.)

5. 10/10 points | Previous Answers AufC AT7 7.2.041.

Round your answer to two significant digits.

A plane leaves airport A and travels 560 miles to airport B at a bearing of N32°E. The plane leaves airport B and travels to airport C 280

miles away at a bearing of S72°E. Find the distance from airport A to airport C.

684 mi

Unit 11 Final Exam (Test)

Justin Deneff-GOL

NS 216, section XM1, Spring 2013 Instructor: Beth Schivitz

WebAssign

−9y2 − 81y

tan 11π 13

tan θ + = π 4

tan θ + 1 1 − tan θ

tan θ + =

=

π 4

tan θ +

2 sin2 x − 1 = 0

x =

6. 10/10 points | Previous Answers AufC AT7 7.3.067.

Find the measure of the smallest nonnegative angle between the two vectors. Round approximate measures to the nearest tenth of a

degree.

θ = 90 °

Is the pair of vectors orthogonal?

7. –/10 points AufC AT7 7.4.058.

Perform the indicated operation in trigonometric form. Write the solution in standard form. Round approximate constants to the nearest

ten-thousandth.

8. 10/10 points | Previous Answers AufC AT7 8.6.018.

Find a rectangular equation for the given polar equation.

9. 10/10 points | Previous Answers AufC AT7 8.2.001.

Examine the following four equations and the graphs labeled i, ii, iii, and iv. Determine which graph is the graph of each equation.

i ii

v = 4i − 4j; w = 4i + 4j

Yes

No

(3 + 3i)( − i)3

r = 6

5 + 4 cos θ

12.10/10 points | Previous Answers AufC AT7 5.5.020.

Graph one full period of the function defined by the equation.

13.–/10 points aufcat7 6.3.033.nva

Use the half-angle identities to find the exact value of the trigonometric expression.

14.10/10 points | Previous Answers aufcat7 6.5.032.nva

Find the exact value of the given expression. If an exact value cannot be given, give the value to the nearest ten-thousandth.

y = cos x 5

2

sin π 8

sin cos−1 − 2

3