Question

How do you solve the triangle given B =12degrees, C=37degrees, c=12?

Answer 1

A= 131, a= 15.04866, b= 4.14569

Explanation:

Angle A= 180-37-12=131 degrees

No using sine rule `Sin C /c= sin B /b`,

b=`(cSinB)/(sin C)` = `(12 sin 12)/(sin 37)`=4.14569

Also using sine rule `(Sin A)/a= (sin C)/c`= `(sin 131) /a=(sin 37)/12`

Therefore a= `(12 sin 131)/(sin 37)`=15.04866

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