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creativ13 [48]
3 years ago
10

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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