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3 years ago

If cos theta = 3/5 and theta is in quadrant 4, tan 2 theta =

Mathematics

1 answer:

Neko [114]3 years ago

7 0

Answer:

16/9.

Step-by-step explanation:

I am assuming you mean tan^2 theta.

The adjacent side of the triangle drawn in Q 4 = 3 (as cos theta = 3/5.

The opposite side of the triangle drawn in Q 4 = sqrt(5^2-3^2) = 4.

The tangent is negative in Q 4

So tan theta = -4/3.

tan^2 theta = 16/9.

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