Posted by **Katie** on Monday, March 5, 2012 at 8:01pm.

Prove sin(α+β)sin(α-β)=cos^2β-cos^2α

## Answer this Question

## Related Questions

- Trig - prove sin(α+β)sin(α-β)=cos^2β-cos^2α please...
- Math - If α and β are two angles in Quadrant II such that tan α...
- Trigonometry (identities) - 1. (-8cosxsinx+4cos2x)^2 +(4cosx^2+8sinxcosx)^2 2. ...
- 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
- math - Complex numbers α and β satisfy αα¯=ββ¯=&#...
- Pure Mathematics - 4) The roots of the equation z^2+2z+4=0 are denoted by α...
- MATH - Differential equations, initial value problem. The general equation of ...
- Trigonometry (identities) - Simplify: 1. sin(α+β)+sin(α-β) 2...