Find sin2x,cos2x and tan2x If cosx=-(3)/(sqrt (10)) and x terminates in quadrant II. sin2x=(3)/(5) cos2x=(4)/(5) tan2x=(3)/(4)

Question

Answer 1

To find

,

, and

given that

and

terminates in quadrant II, we can use the double-angle formulas for sine, cosine, and tangent.First, let's find

. Since

is in quadrant II,

will be positive. We can use the Pythagorean identity

to find

:

Now, let's find

,

, and

using the double-angle formulas:1.

2.

3.

Therefore, the correct values are:

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