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cos^(2)(theta-45^(@))+cos^(2)(theta+15^(...

`cos^(2)(theta-45^(@))+cos^(2)(theta+15^(@)-cos^(2)(theta-15^(@))=`

A

`1/2`

B

`1/3`

C

`1/sqrt2`

D

`1/sqrt3`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-MULTIPLE & SUBMULTIPLE ANGLES-PRACTICE EXERCISE
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