Question

(1- sinxtanx)/1+secx=cosx

Answer 1

@adamsaleh , is this your question:

\(\large{\cfrac{1-\sin{x}\tan{x}}{1+\sec{x}} = \cos{x}}\)

Do we have to prove it or solve for solutions of x ?

Answer 2

@adamsaleh .. you there???

Answer 3

Do you know that we can write tan in terms of cos and sin? If yes, then show that ....

Answer 4

\[1-\sin ^{2x ^{}}/cosx\]=cosx+1

Answer 5

1\[cosx-\sin ^{2 ^{}}x=\cos ^{2}x ^{}+1\]