Q:

# How can the equation sin(cos(-1)) be solved?

A:

To solve the equation sin(cos(-1)), first it is necessary to solve for cos(-1) and then find the sine of that value. Assuming that (-1) is given in units of radians, this equation is equal to 0.514. If (-1) is in degrees, the equation is equal to 0.017.

## Keep Learning

In a right triangle, the cosine of an angle is the ratio of the length of the adjacent side to the angle to its hypotenuse. The sine, on the other hand, is the ratio of the opposite side of the angle to its hypotenuse. For a given angle, the sine and cosine values are fixed and can be found using a scientific or graphing calculator.

Radians are a unit popularly used in measurement calculations that involve angles around a circle. The total angular distance around a circle is 360 degrees, which is equal to 2*pi radians. This is because the circumference of a circle is equal to 2*pi*radius, and when the radius is 1, the circumference is 2*pi.

To convert degrees to radians, multiply the value in degrees by pi/180 since the angle around a semicircle is equal to 1 pi radians or 180 degrees. To convert radians to degrees, multiply the value in radians by 180.

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