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1.

Find the following values (5 pts. each):

(a) cos([(3p)/4])

(b) tan([(8p)/3])

(c) arcsin([(-1)/2])

(d) tan(arcsin([3/8])

(e) sin([(p)/12])

( Hint: [(p)/12] = [1/2]([(p)/6]) )

(f) cos([(p)/6]-arcsin([1/3]))

2.

Verify the following trigonometric identity (15 pts.):

3.

(20pts.) Find the solutions (in [0,2p]) of the equation

4.

Use trigonometric identities to write

as a stretched, translated trig function, and sketch a graph of it. (20 pts.)

5.

Express

in terms of sinx and cosx. (15 pts.)