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Grade: 12th pass
        
A=170 degree then prove that tan(A/2)=(-1-secA)/tanA
one month ago

Answers : (1)

Vikas TU
8732 Points
							
Dear student 
tan(A/2) = (-1- Sec A )/tanA 
=> -CotA – CosecA = tanA/2 
170 = pie – 10 degree 
put the value of A
LHS = RHS 
 
one month ago
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