+1982 A 25-foot ladder is leaning against the side of a house. The top of the ladder is 20 feet above the ground. To the nearest degree, find the angle of elevation between the ground and the ladder.
A) 37°
B) 39°
C) 51°
D) 53°
E) 72°
+128460 Evaluate
arcsin (20/25)
Make sure your calculator is in DEGREE mode....
+1982 first divide opposite by the hypotenuse or 20 / 25
then multiply the answer by sine^-1
so your answer is D:
20/25 = 0.8
sine^-1 (0.8) = 53 and some change
