(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Prove this statement. (1+sinx)(1-sinx)=cos^2

2. Relevant equations

sin^2x+cos^2x=1

3. The attempt at a solution

statement Reason

(1+sinx)(1-sinx) Given

1^2-sinx+sinx+sinx^2 GCF

1+sinx^2 Cancel

1+ (1/cscx) I'm stuck after that

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Trigonometry Proving the statement is innocent

**Physics Forums | Science Articles, Homework Help, Discussion**