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Use the cosine rule to calculate the size of angle x.
Give your answer to the nearest degree.

Use the cosine rule to calculate the size of angle x. Give your answer to the nearest-example-1
User NirIzr
by
8.2k points

2 Answers

6 votes

Answer:

83.1

Explanation:

Using cos rule,


\cos(x) = \frac{15 {}^(2) + 10 {}^(2) - 17 {}^(2) }{2 * 15 * 10} = (36)/(300) = (12)/(100)

X = cos¯¹ 12/100 = 83.10789 = 83.1°

User Jordan Lewis
by
7.7k points
6 votes

Just apply the formula and I hope this helps

Use the cosine rule to calculate the size of angle x. Give your answer to the nearest-example-1
User Sudhir Sharma
by
8.7k points

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