a ladder is leaning against the side of the house the ladder is 4.2 m long and the base of the ladder is 1.3 m from the side of the house. How far up does the ladder reach? Draw a diagram then solve the problem
Answers
Answered by
0
Answer:
Consider the diagram:
enter image source here
From trigonometry we have:
cos
α
=
7
21
7
=
21
cos
(
α
)
and:
α
=
a
r
c
cos
(
7
21
)
=
70.5
≈
71
∘
Answered by
2
3.9 m is the answer to your question
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