cot A - cosec 2A= cot 2A
Answers
Answered by
7
Answer:
proved
Step-by-step explanation:
(cosA/sinA)-(1/sin2A)
=(cosA/sinA)-(1/2sinAcosA)
=(2sinA cos^2 A-sinA)/(2sin^2 A cosA)
=sinA(2cos^2 A-1) / (2sin^2 A cosA)
=cos2A/sin2A
=cot2A
Answered by
4
Step-by-step explanation:
cosa/sina-1/sin2a
=cosa/sina-1/2sina
=2cos^2A-1/2sinacosa
=cos2A/sin2A
=cot2a
Similar questions