Sunday
March 29, 2015

Homework Help: MATH

Posted by MAKITA on Friday, April 10, 2009 at 11:57pm.

1.)Find the exact solution algebriacally, if possible:

(PLEASE SHOW ALL STEPS)

sin 2x - sin x = 0

2.) GIVEN: sin u = 3/5, 0 < u < /2
Find the exact values of: sin 2u, cos 2u and tan 2u
using the double-angle formulas.

3.)Use the half-angle formulas to determine the exact values of sine, cosine, and tangent of the angle: 15 .

4.) Use the sum-to-product formulas to find the exact value of the expression:
sin 195+ sin 105

5.) Verify the identity algebraically:
(cos 4x - cos 2x)/2 sin 3x = -sin x


THANKS IN ADVANCE!

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