The general equation for a sine wave is y = Asin(B(x-C)) + D, where A and B are positive. A sinusoidal wave is any curve that can be written using that formula. More »

A half wave rectifier is a type of circuit that is used to convert alternating current (AC) power into direct current (DC) power. It gets its name from the fact that only half the sine wave of the AC current passes throu... More »

The periods of the trigonometric functions sine and cosine are both 2 times pi. The functions tangent and cotangent both have a period of pi. The general formula for the period of a trigonometric function can be determin... More »

The phase shift formula for a trigonometric function, such as y = Asin(Bx - C) + D or y = Acos(Bx - C) + D, is represented as C / B. If C / B is positive, the curve moves right, and if it is negative, the curve moves lef... More »

The derivative of the inverse sine of x with respect to x is 1/sqrt(1-x^2), where "sqrt" stands for square root. Inverse sine of x is sometimes written as arcsin(x). By definition, arcsin(x) = -iln(ix + sqrt(1-x^2)), whe... More »

The period of the sine graph is 2pi. Sine graph oscillates between one and minus one with a period of 2pi. When x is a multiple of pi, sin(x) = 0. For x = pi/2, 5pi/2, etc, sin(x) = 1, and for x = 3pi/2, 7pi/2, etc, sin(... More »

The trigonometric functions sine, cosine and tangent calculate the ratio of two sides in a right triangle when given an angle in that triangle. To find the cosine of angle pi, you need graph paper. More »