Tuesday
July 22, 2014

Homework Help: Precalculus

Posted by John on Monday, February 10, 2014 at 8:08pm.

Show that
cot((x+y)/2)=-(sin(x)-sin(y))/(cos(x)-cos(y))
for all values of x and y for which both sides are defined.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

algebra - Can someone please help me do this problem? That would be great! ...
Trigonometry - Identities and proof - Show that cot((x+y)/2) = - (sin x - sin y...
tigonometry - expres the following as sums and differences of sines or cosines ...
precalculus - For each of the following determine whether or not it is an ...
Trigonometry - Hello all, In our math class, we are practicing the trigonometric...
precalculus - I dont understand this problem: (Tanө + cos ө)/ (sec...
Pre-Calculus - I don't understand,please be clear! Prove that each equation is ...
Pre-Calculus - Prove that each equation is an identity. I tried to do the ...
Math - Calculus - The identity below is significant because it relates 3 ...
math - Prove that for all real values of a, b, t (theta): (a * cos t + b * sin t...

Search
Members