COS72 (Question: 310695.0 )

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rajbir yadav

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· 1 Months ago

COS72 (Question: 310695.0 )

WAHE GURU JI KA KHALSA ...WAHE GURU JI KI FATEH

Question:

Find the value of cos12 cos24 cos36 cos48 cos60 cos72 cos84.Given cos 36^o = $\frac{\sqrt{5} + 1}{4}$ cos 75^o = $\frac{\sqrt{5} - 1}{4}$

Options:

$\frac{1}{128}$

$\frac{1}{64}$

$\frac{1}{256}$

$\frac{1}{512}$

Solution:

Ans: (a)

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COS72 (Question: 310695.0 )

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