3 years ago

Right Angle Trigonometry

Mathematics

2 answers:

ra1l [238]3 years ago

5 0

Answer:

Step-by-step explanation:

BC/220=sin 60

BC=220 sin 60=220×√3/2=110√3≈190.5 ft

ira [324]3 years ago

4 0

Answer:

190.5 ft

Step-by-step explanation:

For the 60-deg angle, BC is the opposite leg. AB is the hypotenuse.

The trig ratio that relates the opposite leg to the hypotenuse is the sine ratio.

$\sin A = \dfrac{opp}{hyp}$

$\sin 60^\circ = \dfrac{BC}{220}$

$BC = 220 \sin 60^\circ$

$BC = 190.5$

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