3 years ago

A 8.5 B 8.1 C 12.5 D 12.9

1 answer:

4 0

Cosine again. Yay.

Put 36 into a fancy calculator with one of those cos() things. You get about 0.81.

So that's the ratio between x and 10.

So basically x/10 = 0.81, or 0.81 * 10 = x.

8.1 = x

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