cot A-cosec 2A=cot 2A
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Answered by
101
cotA -cosec(2A)
=cosA/sinA - 1/sin(2A)
=cosA/sinA - 1/(2sinAcosA)
=(2cos²A-1)/2sinAcosA
=cos(2A)/sin(2A)
=cot(2A)
i hope help you
=cosA/sinA - 1/sin(2A)
=cosA/sinA - 1/(2sinAcosA)
=(2cos²A-1)/2sinAcosA
=cos(2A)/sin(2A)
=cot(2A)
i hope help you
AradhanaDash:
Thank you so much
Answered by
14
=cos A/sin A- 1/sin2A
=cos A/sin A-1/2sinA.cosA
=2sinA.cos²A-sinA/2sin²A.cosA
=sinA(2cos²A-1)/sinA(2sinA.cosA)
=2cos²A-1/2sinA.cosA
=cos2A/sin2A
=cot2A
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