Asked by josh
How long is a ladder whose base is 3 ft from a wall and makes an 80° angle with the ground?
Question 15 options:
10 ft
12 ft
14 ft
17 ft
Question 15 options:
10 ft
12 ft
14 ft
17 ft
Answers
Answered by
Reiny
Basic trig,
if the length of the ladder is h ft
3/h = cos 80°
h = 3/cos80° = appr 17 ft
if the length of the ladder is h ft
3/h = cos 80°
h = 3/cos80° = appr 17 ft
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