In trigonometry, sine is defined as the ratio of opposite sides by the hypotenuse.
The value of sin3x can be found using the trigonometric identity
sin 3x = 3sin x - 4sin3x
By transposing the terms
4 sin3 x = 3sinx - sin 3x
Let us divide both sides of the equation by 4
sin3x = (3sinx - sin 3x)/4
Therefore, when asked What is the formula of sin3x? then the answer will be that the formula of sin3x is (3sinx - sin 3x)/4.
Summary:
The formula of sin3x is (3sinx - sin 3x)/4.
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