Question

If an incline has a difference in height from one end to the other of 17.8 cm and has a length along the incline of 1.19 m, what is the angle that the incline makes with the horizontal reference surface?
cos (angle) = .178/1.19
So the answer is 81.4? My online homework says that it is wrong?
arcsin(.178/1.19)=8.603
Arctan(.178/1.19) = 8.5072

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