SOLUTION: Please help me solve this equation: Which of the following is a valid trigonometric identities. (only one correct solution) a. tan(x)+ cot(x) = sin(x)cos(x) b. tan(2x) + cot(2x

Algebra ->  Trigonometry-basics -> SOLUTION: Please help me solve this equation: Which of the following is a valid trigonometric identities. (only one correct solution) a. tan(x)+ cot(x) = sin(x)cos(x) b. tan(2x) + cot(2x      Log On


   

Question 877850: Please help me solve this equation:
Which of the following is a valid trigonometric identities. (only one correct solution)
a. tan(x)+ cot(x) = sin(x)cos(x)
b. tan(2x) + cot(2x) = sec(x)csc(x)
c. tan(2x) + cot(2x) = sin(x)cos(x)
d. tan(x) + cot(x) = sec(x)csc(x)
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Which of the following is a valid trigonometric identities. (only one correct solution)
a. tan(x)+ cot(x) = sin(x)cos(x)
b. tan(2x) + cot(2x) = sec(x)csc(x)
c. tan(2x) + cot(2x) = sin(x)cos(x)
d. tan(x) + cot(x) = sec(x)csc(x)
***
tanx+cotx=secxcscx
start with left side:
sin%28x%29%2Fcos%28x%29%2Bcos%28x%29%2Fsin%28x%29
%28sin%5E2%28x%29%2Bcos%5E2%28x%29%29%2F%28cos%28x%29%2Asin%28x%29%29
1%2F%28cos%28x%29sin%28x%29%29=%281%2Fcos%28x%29%29%281%2Fsin%28x%29%29=sec%28x%29csc%28x%29
valid trigonometric identity: d.tan(x)+cot(x)=sec(x)csc(x)