Cosx=cos(a)-cos (b)÷1-cos (a)cos (b).prove that tan (x÷2)=tan (a÷2)cot (b÷2)
Navdeep , 6 Years ago
Grade 11
Trigonometry> Cosx=cos(a)-cos (b)÷1-cos (a)cos (b).prov...
1 Answers
Deepak Kumar Shringi
Last Activity: 6 Years ago
apply fromula of cotx in terms of tanx/2 both sides you will get the answer
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