Answers

2014-05-20T12:46:43+05:30
TanФ + cotФ = 2
Square on both sides
(tanФ + cotФ)^2 = 4

 tan^{2}\theta   + cot^2\theta + 2tan\theta cot\theta = 4

 tan^{2}\theta + cot^2\theta + 2 = 4 [tan\theta cot\theta = 1]

 tan^{2}\theta + cot^2\theta = 2


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its 100 percent right na..?? jst wanted to cnfrm.
100%
tnx