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A right angle is 90 degrees and a 1/3 of 90 degrees equals 30 degrees
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8y ago

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If the side opposite angle A of a right triangle is 30 meters and the hypotenuse is 90 meters what is the sin of angle a?

Remember Sin( angle) = opposite / hypotenuse. Hence Sin(A) = 30/90 Cancel down by '30'0 Sin(A) = 1/3 = 0.333333..... A = Sin^(-1) 0.33333..... A = 19.47122063..... degrees. NB Careful with your triangle labelling. Angles are always shown with a CAPITAL letter. 'A'. The side opposite to the given angle is small/lower case of the same letter 'a'. Similarly , ;B; & 'b; and 'C' & 'c'.


What is one thrid of a right angle?

A right angle is 90 degrees, can you find 1/3 of 90, sure you can, try it, good luck!