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A=170 degree then prove that tan(A/2)=(-1-secA)/tanA

A=170 degree then prove that tan(A/2)=(-1-secA)/tanA

Grade:12th pass

1 Answers

Vikas TU
14149 Points
4 years ago
Dear student 
tan(A/2) = (-1- Sec A )/tanA 
=> -CotA – CosecA = tanA/2 
170 = pie – 10 degree 
put the value of A
LHS = RHS 
 

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