Question

As x increases from 0 to π/2the value of cos x
2
(A) increases
(B) decreases
(D) increases then
(C) remains constant
decreases​

Answer 1

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Answer 2

we know cos 0 = 1

cos 60=1/2

since 1>1/2 so cos0>cos60

We can say angle(theta) ∝1/Cos (angle(theta))

so as x increases then it's cos value decreases

Option b is correct

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