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The value of sin^2 38^@-cos^2 52^@ is : ...

The value of `sin^2 38^@-cos^2 52^@` is :
`sin^2 38^@-cos^2 52^@` का मान ज्ञात करें ।

A

a)`1/sqrt2`

B

b)1

C

c)`sqrt2`

D

d)0

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