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valkas [14]
2 years ago
13

Help with Trigonometric identities

Mathematics
1 answer:
Gre4nikov [31]2 years ago
3 0

Answer:

Option 2

Step-by-step explanation:

Since theta is in the third quadrant, the sine of theta is negative.

By the Pythagorean identity,

\sin \theta=-\frac{\sqrt{105}}{13}

So, using the double angle formula for sine, we get that

\sin 2\theta=\frac{16\sqrt{105}}{169}

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