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Subject:
Re: Arithmetic question
Response To:
Arithmetic question ()

Larry Barrett
Draw a right triangle. Label the height H and label the hypotenuse L, where L is what you want to determine and H is 18". The angle at the top of this triangle is 11 degrees.
Since this is a right triangle, cosine (11 degrees) = H/L.
If you have a pocket calculator, enter 11, then tap cos and you will see that the answer is .98.
So .98 = H/L, or rewriting this you have L=H/.98.
Substituting for H, L=18/.98 = 18.33.

I see you have a bunch of answers already, but I agree with Mark.

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