Question

Find the measure of ∠C to the nearest degree.
A) 20°
B) 22°
C) 24°
D) 66°

Answer 1

The answer is 22. To use the sin-1 on the calculator you press shift then sin. Your welcome~

Answer 2

Answer: Option 'B' is correct.

Explanation:

Since we have given from the figure shown

AB = 2

BC = 5

AC = √29

We need to find ∠C in ΔABC:

For this we will use "Trigonometric Ratios" :

`\tan C=(AB)/(BC)\\\\\tan C=(2)/(5)\\\\\tan C=0.4\\\\C=\tan^(-1)(0.4)\\\\C=21.8\textdegree\\\\C=22\textdegree\ approx.`

Hence, Option 'B' is correct.