The integral of cos(2x) is 1/2 x sin(2x) + C, where C is equal to a constant. The integral of the function cos(2x) can be determined by using the integration technique known as substitution. In calculus, substitution is ... More »

The derivative of cos(2) is 0. The derivative of cos is -sin but, in this case, it does not matter once the chain rule and the constant rule are applied. It is also possible to simplify the expression first, which result... More »

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The derivative of cos(4x) is -4*sin(4x)while the general derivative form of cos(y) is -dy*sin(y). Since there is a variable contained in the bracket, the derivative of it must also be taken due to the chain rule. Since t... More »

The integral of cosine squared is equal to x/2 + (1/4)sin(2x) + C, where C is a constant. The integral can be solved by using the half-angle identity of the cosine squared function, where cos2(x) = 1/2 + (1/2)cos(2x). More »

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The cosine of 30 degrees is 0.86. It is also expressed as the square root of three divided by two. The cosine of an angle is calculated by dividing the length of the side of a right triangle adjacent to the acute angle b... More »

The basic trigonometric functions sine, cosine, and tangent give the ratio between two sides of a triangle with a given angle. The inverse trig functions find the angle if the ratio is known. Finding the inverse cosine o... More »

The integral of sin^2 is one-half of x, minus one-eighth of the sine of 4x, plus a constant. Using mathematical notation, the integral of sine squared can be written as sin^2 x dx = 1/2 * x - 1/8 * sin(4x) + C. More »