(adsbygoogle = window.adsbygoogle || []).push({}); "simple" trig problem

1. The problem statement, all variables and given/known data2(sinA+cosB)sinB=3-cosB. Find 3tan^{2}A+4tan^{2}B

2. Relevant equationsTrig Identities

3. The attempt at a solutionwell, i expanded 3tan^{2}A+4tan^{2}B= 3sin^{2}Acos^{2}B+4sin^{2}Bcos^{2}A all over cos^{2}Acos^{2}B after that I am stuck.

**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: Simple trig problem

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