SOLUTION: Prove the identity: A) Sinx( sec x-csc x) = tanx-1 B) (cot x-1)^2 = 1-sin2x/ sin^2 x Thaaaank you!!

Algebra ->  Trigonometry-basics -> SOLUTION: Prove the identity: A) Sinx( sec x-csc x) = tanx-1 B) (cot x-1)^2 = 1-sin2x/ sin^2 x Thaaaank you!!      Log On


   

Question 822716: Prove the identity:
A) Sinx( sec x-csc x) = tanx-1
B) (cot x-1)^2 = 1-sin2x/ sin^2 x
Thaaaank you!!
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Prove the identity:
A) Sinx( sec x-csc x) = tanx-1
start with left side:

verified:left side=right side
..
B) (cot x-1)^2 = 1-sin2x/ sin^2 x
stare with left side:

verified:left side=right side