trigonometry - How would a triangle for sin 90 degree look
I am studying trigonometry in my school and learned that in a triangle the side opposite to angle theta should be taken as perpendicular side - hypotenuse remains the same and the third remaining s
trigonometry - Why does sin(90)=1, and not 0? - Mathematics Stack Exchange
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Prove sin(90-A)=cosA.avi
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