3 years ago

Solve this, explain your choice.

1 answer:

4 0

Because the triangles are congruent,
all their corresponding sides are equal,
so 2x-9=x+5, x=14

first side : x+5=14+5=19
second side: 15
third side: 8
P = 19+8+15= 42 Answer is D

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3 years ago

Please help me <br> I have to solve the triangle with the law of sines

Nikitich [7]

Check the picture below.

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A = 180 - 39.34 - 25

A = 115.66

$\bf \cfrac{sin(25^o)}{44}=\cfrac{sin(A)}{a}\implies \cfrac{sin(25^o)}{44}=\cfrac{sin(115.66^o)}{a} \\\\\\ a\cdot sin(25^o)=44\cdot sin(115.66^o)\implies a=\cfrac{44\cdot sin(115.66^o)}{sin(25^o)} \\\\\\ a\approx 93.8452\implies \stackrel{\textit{rounded up}}{a = 93.85}$