Question

Write each expression as an algebraic expression of a single trigonometric function.

1. (1-sin^2x)/(1+sinx)
2. sin^2x/(1+cosx)

Answer 1

(1-Sin^2(x))=(1+Sin(x))(1-Sin(x))

Answer 2

thank you, i appreciate ur help very much

Answer 3

are you fine with second one?

Answer 4

not exactly.. i know that i should pull sine out as a common factor, right?

Answer 5

remember identity

sin^2(x)+ cos^2(x)=1

sin^2(x)=1- cos^2(x)

Answer 6

so i should end up with (1-cos^2(x))/(1+cosx)

Answer 7

yes

Answer 8

and do what I did for first one

Answer 9

(1-cosx)(1-cosx)=1+cosx