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Reptile [31]
3 years ago
14

Solve the given triangle by finding the missing angle and other side lengths.

Mathematics
1 answer:
Ne4ueva [31]3 years ago
5 0

Answer:

∠ABC= 180° -21° -37° (∠ sum of triangle ABC)

∠ABC= 122°

Using sine rule,

\frac{AB}{sin21°}  =  \frac{200}{sin122°}

AB= 200(sin21°)/sin 122°

AB= 84.5 units (3 s.f.)

\frac{BC}{sin37°}  =  \frac{200}{sin122°}

BC= 200(sin37°)/ sin122°

BC= 142 units (3 s.f.)

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