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masya89 [10]
3 years ago
11

Can someone help me with this question "Given the triangle below, what is m (angle) < B, rounded to the nearest tenth?

Mathematics
1 answer:
JulsSmile [24]3 years ago
8 0
The answer
the sum of the angles in a triangle is always 180°
m < B + m < A + m < C = 180°,  
let's find m < B, 
by applying sinus rule 
 14/sinB=10/sinC, so sinB= 10xsinB = 14 x sinC and therefore, 
sinB=( 14/10 )sinC =7/2 sin 36° =0.82, so arcsinB=55.08°
the answer is C 55.4°



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