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joja [24]
3 years ago
9

I need help lol with this problem pls help pls pls pls

Mathematics
1 answer:
Virty [35]3 years ago
5 0

Answer:

Step-by-step explanation:

For this triangle, since the angle is included between 2 given sides, the formula will be:

A =\frac{1}{2}ab*ac*sin(angleA)

Putting values where they belong:

A=\frac{1}{2}(10)(12)sin72

Do all that in your calculator (in degree mode, NOT radian!) to get

A = 57.1 square cm

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