Posted by Urgh on Thursday, September 20, 2007 at 12:51am.
Establish the identity:
(1  cos^2 0)(1 + cot^2 0) = 1
No idea!

Trigonometry  drwls, Thursday, September 20, 2007 at 2:02am
Let's use x instead of 0 as the angle, to avoid cnfusion with the number zero.
Remember that 1  cos^2 x = sin^2 x
Also sin^2 x *cot^2 x = sin^2*cos^2/sin^2 = cos^2 x
With those steps, and sin^2 x + cos^2 x = 1, you should be able to prove this identity.
Answer This Question
Related Questions
 Trigonometry  Use the properties of logarithms and trigonometric identities to ...
 trigonometry...........  Prove the following identity: (i) tan^3x/1+tan^2x + ...
 trig  Establish the trigonometric identity (Hint: Use sum to product) cos(5x)+...
 Trigonometry  Please review and tell me if i did something wrong. Find the ...
 trig  For each expression in column I, choose the expression from column II to ...
 PreCalculus  I don't understand,please be clear! Prove that each equation is ...
 PreCalculus  Prove that each equation is an identity. I tried to do the ...
 trigonometry  I need help in understanding how to identify which identity to ...
 Trigonometry need help!!!  need help don't understand how to do this.... 1....
 Pre Cal  could someone please tell me what the other angle identity of tan is? ...
More Related Questions