A right angle is an angle that measures exactly 90 degrees. Angles under 90 are called acute and angles greater then 90 are called obtuse. Easiest way to think about a right angle
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1. Loosen the screws so the piece can be inserted. This will either be one or two handles to loosen depending on the design of the clamp. 2. Insert the right angle into the clamp
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1 Know the 6 trig ratios. You need to memorize the following: sine abbreviated as sin opposite/hypotenuse cosine abbreviated as cos adjacent/hypotenuse tangent abbreviated as tan
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The square drawn in a right angle simply is to indicate that the angle is, indeed, 90 degrees.
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