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makkiz [27]
3 years ago
11

A triangle ABC has two side lengths of 28 ft. and 24 ft. If angle C is 91°, what's the measurement of angle B

Mathematics
1 answer:
Zina [86]3 years ago
3 0

Answer:

Step-by-step explanation:

Given that in a triangle ABC,  AB = 28, BC = 24 and angle C =91,

We have to find measure of angle B.

Since three measurements are given, we can solve the triangle easily

Use the sine formula for triangles.

\frac{c}{SinC} =\frac{b}{Sin B}=\frac{a}{Sin A}

A = arcsin(\frac{asinC}{c}  )=58.98

Since sum of 3 angles is 180, we calculate B easily

Angle B = 180-(A+C)

= 180-(91+58.98)

=30.02

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