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

I need help lol with this problem pls help pls pls pls-example-1
User Steff
by
8.4k points

1 Answer

4 votes

Answer:

Explanation:

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


A =(1)/(2)ab*ac*sin(angleA)

Putting values where they belong:


A=(1)/(2)(10)(12)sin72

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

A = 57.1 square cm

User Scott Chacon
by
7.8k points

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