If sin x degree = cos 56 degree, find x. Solve by using right-angled triangles.
First, I would draw a right triangle so that I could label the parts. Mark your 90 degree angle, and make one of the other two angles 56 degrees. Remember that a triangle is made of three angles whose sum (adding up) is 180 degrees. We have used 146 of those 180...
(The entire section contains 142 words.)
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