SOLUTION: If sin(x) = 1 5 and x is in quadrant I, find the exact values of the expressions without solving for x. (a) sin(2x) (b) cos(2x) (c) tan(2x)

Question 1204736: If
sin(x) =
1
5
and x is in quadrant I, find the exact values of the expressions without solving for x.
(a) sin(2x)

(b) cos(2x)

(c) tan(2x)
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

If

and is in quadrant I, find the exact values of the expressions without solving for
in quadrant I sin, cos, and tan are positive

=> => and

using Pythagorean theorem,

or
we need positive value

then

(a)

(b)

(c)

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