Question #653d5

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Question #653d5

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Answer 1 · 2015-11-15T21:18:35

Change cotangent to sine and cosine ...

Explanation:

$cot 50 = \frac{cos 50}{sin 50} = \frac{x}{2}$ $cot50= cos50/sin50=x/2$

Next, use cross multiplication ...

$2 cos 50 = x sin 50$ $2cos50=xsin50$

Finally, solve for x ...

$x = \frac{2 cos 50}{sin 50} \approx 1.6782$ $x=(2cos50)/sin50~~1.6782$

Note: Since $50^{o}$ $50^o$ is not a standard value on the unit circle , use your calculator to find the value of $sin 50$ $sin50$ and $cos 50$ $cos50$

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Question #653d5

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