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Prove that : sin 25° . sec 65° = 1​

Prove that : sin 25° . sec 65° = 1​
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Prove that : sin 25° . sec 65° = 1​

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User Crysis
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1 Answer

5 votes

Answer:


sin25° * sec65° = 1 \\ cos(90° - 25°) * (1)/(cos65°) = 1 \\ </p><p>cos65° * (1)/(cos65°) = 1 \\ 1 = 1

Hope it helps you<3

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User Paul Anderson
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