Question

If the complement of an angle is $79°$, then the angle will be of

• A. $1°$
• B. $11°$
• C. $79°$
• D. $101°$

Answer 1

The correct option is B

$11°$

Find the value of the angle

When the sum of measurement of two angle is $90°$, the angle are called complementary angle. Each of them is called complement of the other.

The given complementary of an angle is $79°$

Let the measurement of the other angle is $A°$.

Then

$$\begin{gathered} A°+79°=90° \\ \Rightarrow A°=90°-79° \\ \Rightarrow A°=11° \end{gathered}$$

Hence, the measurement of the other angle is $11°$,

Hence, the correct option is (B).