Question

Prove the following identity:

1/tanx + tanx = 1/sinxcosx

I can't seem to prove it. This is my work, I must've made a mistake somewhere:

Converted 1/tanx: 1/sinx/cosx + sinx/cosx = 1/sinxcosx

Simplified 1/sinx/cosx: cosx/sinx + sinx/cosx = 1/sinxcosx

Found common denominator and multiplied numerator: sinxcosx/sinxcosx + sinxcosx/sinxcosx = 1/sinxcosx

Simplified: 2sinxcosx/sinxcosx

Wouldn't that simplify to just sinxcosx, not 1/sinxcosx?

Answers

bobpursley
cosx/sinx + sinx/cosx = 1/sinxcosx
common denominator: sinxcosx

(cos^2x+sin^2x)/sinxcosx
not it is proved, as the numberator is 1.

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