Prove that tan2 a - sin2 a = tan2 a ? sin2 a
Answers
Answered by
11
tan²A + sin²A = tan²A × sin²A
Hence proved.
Hence proved.
Attachments:
Answered by
0
LHS = tan²A -sin²A
= (sin²A / cos²A) - sin²A-------[tan A=sin A/cos A]
= (sin²A - sin²Acos²A) / cos²A
= sin²A (1- cos²A) / cos² A------ [tan A = sinA / cos A]
= tan²A sin²A= RHS(PROVED)
Similar questions