Math, asked by tanyamaingi, 1 year ago

please help me to solve this question as soon as possible please guys

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Answered by Anonymous

7

[Note : refer the attachment]

* just put the values of given angles.

* here note it that

( cos²Φ = (cos Φ)²)

* use the BODMAS principal to find the final result after putting the values of angles .

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