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The value of sin\ (1/2cot^(-1)(-3/4))+co...

The value of `sin\ (1/2cot^(-1)(-3/4))+cos(1/2cot^(-1)(-3/4))` is/are equal to
a.`1` b. `(3sqrt(2))/(10)` c.`sqrt(2)sin(1/2cot^(-1)(-3/4)+cot^(-1)(1))\ `
d. `2sin(pi-tan^(-1)(1)-1/2tan^(-1)(4/3))`

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