A+ Work

SHORT ANSWER.  Write the word or phrase that best completes each statement or answers the question.

Determine the equation of the function that is graphed.

1)

Find the amplitude, period or phase shift.

2) Find the period of y = -5 sin .                                           

3) Find the amplitude of y = 4 cos .              

Factor and simplify.

4) sin4 x - cos4 x + cos2 x                                         Find the exact value.

5) Given that sin θ = -  with θ in quadrant IV, find cos 2θ.                       

Multiply and simplify.

6) (1 - cos x)(1 + cos x)                                                                     

Prove the identity.

7) tan x + cot x = sec x csc x                                                             

8)  =                                                             

Use trigonometric identities to find the exact value.

9) sin 185° cos 65° - cos 185° sin 65°                                              

10)