Friday
April 18, 2014

Homework Help: Trig

Posted by Katie on Monday, March 5, 2012 at 7:12pm.

prove sin(α+β)sin(α-β)=cos^2β-cos^2α
please help... this is the only one I
didn't understand out of all my homework...

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - If α and β are two angles in Quadrant II such that tan α...
math - Complex numbers α and β satisfy αα=ββ=&#...
Trig - Prove sin(α+β)sin(α-β)=cos^2β-cos^2α
Trig - Prove sin(α+β)sin(α-β)=cos^2β-cos^2α
Trig - prove sin(α+β)sin(α-β)=cos^2β-cos^2α
Trig - prove sin(α+β)sin(α-β)=cos^2β-cos^2α
Pure Mathematics - 4) The roots of the equation z^2+2z+4=0 are denoted by α...
pre-calc help please ! - how do you verify this identity Sin^3βcosβ+...
Precalc - If α, β, and γ are direction angles for a vector in ...
MATH - Differential equations, initial value problem. The general equation of ...

Search
Members