A 7-foot ladder is leaned against a building in such a way that the bottom of the ladder is 4 feet from the base of the wall. Find the angle formed between the ladder and the ground.

A.30

B.35

C.55

D.60

Question

A 7-foot ladder is leaned against a building in such a way that the bottom of the ladder is 4 feet from the base of the wall. Find the angle formed between the ladder and the ground.

A.30

B.35

C.55

D.60

anonymous · Answer

$$\theta =\frac{180 \cos ^{-1}\left(\frac{4}{7}\right)}{\pi }=55.1501 \text{ degrees} $$

anonymous · Answer

Thank you for the medal.

anonymous · Answer

Cos(x)=4/7
Cos(x)=.57
Take inverse of cos(.57)
55.1501 degrees

anonymous · Answer

The Mathematica program was used for the calculation.  Mathematica computes using radians for angle measurement.

anonymous · Answer

Your welcome (:

anonymous · Answer

so whats the awnser lol