SOLUTION: How do I get the left side to equal the right? (sin x)(tan x cos x-cot x cos x) = 1-2cos^2 x X= theta

Algebra ->  Trigonometry-basics -> SOLUTION: How do I get the left side to equal the right? (sin x)(tan x cos x-cot x cos x) = 1-2cos^2 x X= theta      Log On


   

Question 405196: How do I get the left side to equal the right?
(sin x)(tan x cos x-cot x cos x) = 1-2cos^2 x
X= theta
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
Let work with left side sin%28x%29%2A%28tan%28x%29cos%28x%29-cot%28x%29cos%28x%29%29
Use formulas tan+%28x%29=sin%28x%29%2Fcos%28x%29, cot%28x%29=cos%28x%29%2Fsin%28x%29

use formula %28sin%28x%29%29%5E2=1-%28cos%28x%29%29%5E2