Saturday
April 19, 2014

Homework Help: Algebra2

Posted by jeff on Friday, May 28, 2010 at 9:15am.

Help How do I figure out:
(cos 40)(cos20) - (sin 40)(Sin 20)
Thank you

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...
tigonometry - expres the following as sums and differences of sines or cosines ...
algebra - Can someone please help me do this problem? That would be great! ...
trig - it says to verify the following identity, working only on one side: cotx+...
Trig - What is the exact value of cos 40 degrees cos 50 degrees minus sin 40 ...
pre calc trig check my work please - sin x + cos x -------------- = ? sin x sin ...
Math - Calculus - The identity below is significant because it relates 3 ...
maths (trigonometry) - calculate the following: 1)sin 50 degree-sin 70 degree+...
Precal - I do not understand how to do this problem ((sin^3 A + cos^3 A)/(sin A...
Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...

Search
Members