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A triangle has a 56-degree angle, formed by a 10-inch side and an x-inch side. Given that the area of the triangle is 18 square inches, find x.

1 answer

Did you know that the area of a triangle
is (1/2)ab sinØ, where a and be are the sides containing angle Ø ?

so ...
18 = (1/2)(10)b(sin56)
b = 36/(10sin56)
= .....

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