Find the area of the triangle shown below.
А
7 in.
20°
с
B
10 in.

The below solved example problem may be useful to understand how the values are being used in the mathematical formulas to find the triangle area. Find the area of a triangle having the base b = 18 & height h = 12 cm?

its not b

step-by-step explanation:

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.