I know this is below most of those that peruse these forums, but I've been giving myself an ulcer trying to figure these silly things out.(adsbygoogle = window.adsbygoogle || []).push({});

The first problem starts out as

(1-sin^2(x))(1+tan^2(x))=1

and I've got it down to

(sin^2(x)/tan^2(x))-sin^2(x)=1

but from there I've got no idea.

The second was

(1+cot(x))/csc(x)=(1+tan(x))/sec(x)

and I've got the right side down to

(cos/1)+(1/csc)

but how that becomes (1+cot(x))/csc(x)is beyond me.

**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!

# Trouble in pre-cal, proofs

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