you must have a typo in A since the left side equals 1
multiply the left side by (1+sinx-cosx)/(1+sinx-cosx)
which after collecting like terms, and reducing comes to the right side.
A key simplification is the sequence of terms
1 ....+sin^2x... - cos^2x
which reduces to 2sin^2x
I am sure a similar step will work for A) after you find your typo
Ok thanks, I did make a typo my bad.
Pre Clac - Determine k and solve the equation: x^3-kx^2+3x+54=0, if one of it ...
Pre-Calc (Prove the identity) - Prove the identity. (show steps please!) Thank ...
Pre-Calc/Math - Prove Identity: (1-cos2x/ tan x) = sin2x
Pre-Calc/Math - Prove the identit: cosxcotx+sinx=cscx
Pre-Calc/Math - Prove identity: (sec x/csc x) + (sin x/cos x)=(2/cot x)
math - My math teacher wants us to prove that all of our answers are correct. ...
math (pre clac) - so its this picture of a rectangle inscribed in a circle. the ...
Pre-Calc (Prove the identity) - Prove the identity. (show your work please) tan(...
Math pre cal - prove the following identity cos^4X - sin^4X = 1-2sin^2X
pre calc - prove identity cscx-(cosx)(cotx)=sinx