cosine+1/cosine-1=secent+1/secent-1

Question

teacher can not even figure out the answer to this problem on our test

Answer 1

kosine +(1/kosine) -1 = sekant +(1/sekant) -1

the 2 negativ 1's kansel, so yu hav

kosine+(1/lkosine)=sekant+(1/sekant)

But sekant=(1/kosine) so 2 terms kansel, so yer left with

kosine=(1/sekant)

But sekant=(1/kosine), so 1/sekant=kosine

so yu hav kosine=kosine

true