Which function is positive in second quadrant, Sinx , Cos x , Sinx and Cosec x , Sin x and Cos x, What is the reciprocal of tan x, Cot x, -Cos x, Sin x, Sec x, What is expansion of Sin(A+B), SinA CosB+CosASinB, SinB CosB+CosASinA, SinA CosB-CosASinB, SinACosA+CosBSinB.

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