Joey is 5 years less than three times the age of his son. Joey is 43 years old.

Mathematics

1 answer:

Vikki [24]3 years ago

6 0

Answer:

amogus

Step-by-step explanation:

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If you know that $\sin\dfrac\pi3=\dfrac12$ , then you know right away

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Otherwise, you can derive the same result. Let $\theta=\sin^{-1}\dfrac12$ , so that $\sin\theta=\dfrac12$ . $\sin^{-1}$ is bounded, so we know $-\dfrac\pi2\le\theta\le\dfrac\pi2$ . For these values of $\theta$ , we always have $\cos\theta\ge0$ .

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