Prove that Cot^-1(x) + Cot ^-1(a^2-x+1) = Cot^-1(a-1)
Prity Kushwaha , 6 Years ago
Grade 12
Trigonometry> Prove that Cot^-1(x) + Cot ^-1(a^2-x+1) =...
1 Answers
Deepak Kumar Shringi
Last Activity: 6 Years ago
as we know tan-1x = cot-1(1/x) so first convert angles in terms of tan-1 and then use
tan-1x+tan-1y = tan-1(x+y/1-xy)
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