Hi all(adsbygoogle = window.adsbygoogle || []).push({});

Teacher gave me homework that i am having trouble doing it ..

i need help in these two problems which i can't seem to solve.

how can i prove the following :

@= theta

sec@ + tan@ = tan@sec@

cot@ + cos@

and

sin^2@ - tan@= tan^2@

COS^2@ - cot@

my try is in the attach file

**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: Need Help in Proving Trig Identities

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