Use the sine function to find A of a standard right triangle ABC given a = 11.23 m and c = 17.87 m. Round to the nearest 0.1°.
A)38.9°
B)51.1°
C)57.9°
D)32.1°

Question

Quizplus · Accepted Answer

In a right triangle, the sine of angle A (sin A) is equal to the opposite side (a) divided by the hypotenuse (c). So, sin A = a/c = 11.23/17.87. Calculating this gives sin A ≈ 0.628. Using the inverse sine function (sin^-1) to find angle A gives A ≈ 38.9°.

Use the Sine Function to Find a of a Standard