Coolone20
Answered

Question 3 (5 points)
A ladder that is 12 ft long is leaning against a building, forming a 55° angle with the
ground. How high up the building will the top of the ladder reach? Round your
answer to the nearest tent of a foot.
O
12.0
09.8
O
O
17.1
Question 4 (5 points)

Answer :

ivycoveredwalls

Answer:

9.8 ft

Step-by-step explanation:

Picture attached.

The side marked h is the side opposite the 55 degree angle.  The side marked 12 is the hypotenuse of the right triangle.  The trigonometric ratio that involves the opposite and hypotenuse is the sine.

[tex]\sin{55^\circ} =\frac{h}{12}[/tex]

Multiply both sides of the equation by 12 to get

[tex]h=12\sin{55^\circ}[/tex]

Use a calculator (in degree mode!).

${teks-lihat-gambar} ivycoveredwalls

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