# What is its complement?

**its**own

**complement**. Find

**the**measure of a suppllement to this angle. Gretchen, If you have an angle and want to know

**its complement**, you subtract it from 90 degrees.

Correspondingly, how do you find the complement?

To determine the supplement, subtract the given angle from 180. 180 - 43 = 137° The supplement of 43° is 137°. To determine the **complement**, subtract the given angle from 90. 90 - 43 = 47° The **complement** of 43° is 47°.

**supplement**of an angle is the angle that has to be added to make 180°. The

**complement**is the angle that has to be added to make 90°. So the

**supplement**of 110° is 70° because 110 + 70 = 180. Then the

**complement**of 70° is 20° because 70 + 20 = 90.

Also to know is, what is the complement rule?

A mutually exclusive pair of events are **complements** to each other. For example: If the desired outcome is heads on a flipped coin, the **complement** is tails. **Complement rule**. The **Complement Rule** states that the sum of the probabilities of an event and its **complement** must equal 1, or for the event A, P(A) + P(A') = 1.

Hi Tom. The measure of the complement of any **angle** A is ninety degrees minus the measure of **angle** A. So if you have an **angle** that is 20 degrees, then the complement **angle** measures 70 degrees.