If you have a right angled triangle, then:
sin(angle) = opposite_side/hypotenuse
Otherwise, if the angle (x) is expressed in radians, it can be calculated by the infinite sum:
sine(x) = x - x3/3! + x5/5! - x7/7! + ...
where the rth term (r ≥ 1) is:
x(2r-1)/(2r-1)! (-1)r-1
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type the value of sine in the calculator and press 2ND SIN for sin-1, or press 2ND SIN for sin-1 and type the value of sine, because -sin(.xxxx) = angle known as inverse sine
The sine of an angle of a right triangle - which is a triangle containing one 90o angle - is calculated as the length of the side opposite the angle divided by the length of the hypotenuse. For very small values of x, sin(x) is approximately equal to x.
The sine function is used in trigonometric calculations when attempting to find missing side lengths of a right triangle. The sine of an angle in a triangle is equal to the length of the side opposite of that angle divided by the length of the hypotenuse of the triangle. Using this fact you can calculate the length of the hypotenuse if you know an angle measure and the length of one leg of the triangle. You can also calculate the length of a leg of the triangle if you know an angle measure and the length of the hypotenuse.
the sine of an angle can't be greater than 1.0
kvar can be calculated as follows the a product KVA andt the sine of the angle between the KVA and KW.