sec2θ = 2/√3 হলে, θ এর মান কত?

A

60°

B

45°

C

30°

D

15°

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সমাধান:

sec2θ = 2/√3

⇒ sec2θ = sec30°

⇒  2θ = 30°

⇒  θ = 30°/2

∴ θ = 15°

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Updated: 1 month ago

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