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3 years ago

50 points help asap!

Mathematics

2 answers:

Luden [163]3 years ago

8 0

Answer:

58 feet.

Step-by-step explanation

Since the angle given is across from the length we need to find and we are given the hypotenuse, we use sine.

Sin(46)=x/80 where x is the height of the triangle and 80 is the hypotenuse.

80sin(46)=x

x=57.55 or 58 feet.

Fantom [35]3 years ago

4 0

AB=Perpendicular=80ft
Angle of elevation= $\theta$ =46°

We need Base i e BC

$\\ \rm\Rrightarrow tan46=\dfrac{AB}{BC}$

$\\ \rm\Rrightarrow BC=\dfrac{AB}{tan46}$

$\\ \rm\Rrightarrow BC=\dfrac{80}{1}\approx 80ft$

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