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Consider the following statements in S a...

Consider the following statements in `S and R S:` Both `sinx and cosx` are decrerasing function in the interval `(pi/2,pi) R:` If a differentiable function decreases in an interval `(a,b)`, then its derivative also decrease in `(a,b)`.Which of the following it true? (a) Both S and R are wrong. (b) Both `S and R` are correct, but R is not the correct explanation of S. (c) S is correct and R is the correct explanation for S. (d) S is correct and R is wrong.

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