Recent questions tagged trig identity

1 answer
give the formula for cos (2x) in terms of cos x and sin x
asked Aug 27, 2012 in Trigonometry Answers by anonymous | 646 views
1 answer
give the formula for cos (2x) in terms of cos x and sin x
asked Aug 27, 2012 in Trigonometry Answers by anonymous | 834 views
1 answer
(2sin^2x+3cosx)^2 + (3sinx-2cosx)^2=13
asked Jul 12, 2012 in Trigonometry Answers by anonymous | 897 views
0 answers
sinx + cosx/ 1+cosx = tanx
asked Jul 12, 2012 in Trigonometry Answers by anonymous | 767 views
1 answer
cos²x-sin²x=1-2sin²x
asked Jun 22, 2012 in Trigonometry Answers by anonymous | 5.9k views
1 answer
cscx-cosxcotx=sinx show it is an identity
asked Jun 6, 2012 in Trigonometry Answers by anonymous | 1.3k views
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Recent questions tagged trig identity

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