Question

Here is the proof of sinx+cos^2x/cosx=tanx+cosx. What is the missing line?

Answer 1

See Explanation Below

Step-by-step explanation:

Given

Required

Prove

To start with; we open the bracket on the left hand side

Reorder

From trigonometry;

So;

becomes

Also from trigonometry;

So,  

becomes

Proved