Thursday
April 24, 2014

Homework Help: trig

Posted by donny on Friday, April 30, 2010 at 9:08pm.

can someone please help me with this problem. i'm doing my review right now and i'm stuck?

Find cos(s + t) given that cos s = 1/3, with s in quadrant 1, and sin t = -1/2, with t in quadrant 4.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Precal - I do not understand how to do this problem ((sin^3 A + cos^3 A)/(sin A...
Trig Help! - Question: Trying to find cos π/12, if cos π/6 = square ...
MATH - Hi, I really need help with these questions. I did some of them halfway, ...
TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
Trig. Law of Cosines - Show that any triangle with standard labeling... a^2+b^2+...
trig - I'm confused with this concept: Okay, so I have this problem: cos2x( 2 ...
trig - The expression 4 sin x cos x is equivalent to which of the following? (...
trig - how would you verify this trig identity (1+cos(x) / 1-cos(x)) - (1-cos(x...
Math - Calculus - The identity below is significant because it relates 3 ...
algebra - Can someone please help me do this problem? That would be great! ...

Search
Members