The sine of an angle in a right triangle is the ratio of the length of the side opposite the angle to the length of the hypotenuse.
In terms of ratios, the sine of an angle is defined, in a right angled triangle, as the ratio of lengths of the opposite side to the hypotenuse.
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The sine of an angle in a right triangle is the ratio of the length of the side opposite the angle to the length of the hypotenuse.
In terms of ratios, the sine of an angle is defined, in a right angled triangle, as the ratio of lengths of the opposite side to the hypotenuse.
sin(20) = 0.3420 (approx).
Since sin(a)=opposite/hypotenuse, the reciprocal function is that function which is equal to hypotenuse/opposite. This is "cosecant", or csc(a). The reciprocal of sin(a) is csc(a). I will solve all your math problems. Check my profile for more info.
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The cosine function on a right triangle is Adjacent leg divided by the hypotenuse of the triangle.