sec2θ + cosec2θ = ?

A

cosec2θ

B

tan2θ

C

sec2θ. cosec2θ

D

tan2θ. cot2θ

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সমাধান:

​sec2θ + cosec2θ

​= (1/cos2θ) + (1/sin2θ)

​= (sin2θ + cos2θ)/(cos2θ. sin2θ)

​= 1/(cos2θ. sin2θ)

​= (1/cos2θ). (1/sin2θ)

​= sec2θ. cosec2θ

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Updated: 1 month ago

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