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Question

Mathematics Question on Trigonometric Functions

If 0 < θ < π2\frac{π}2 and tanθ = 52\frac{\sqrt5}2, then cosθ is equal to

A

12\frac{1}2

B

32\frac{\sqrt3}2

C

13\frac{1}3

D

23\frac{2}3

E

53\frac{\sqrt5}3

Answer

23\frac{2}3

Explanation

Solution

The correct option is (D): 23\frac{2}3