trig
posted by ab .
Use a table of trigonometric values to find the angle θ in the right triangle in the following problem. Round to the nearest degree, if necessary.
cos θ = 0.9659 A = ? H = 20

I pitched those tables over 25 years ago, just about every cheap calculator can do trig.
cos Ø = .9659
Ø = 15°
Since I can't see your diagram , you will have to decide whether to use the sine or the cosine of 15° to find the rest
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