It looks like an equilateral triangle if I am correct then angle C equals 60 degrees
H = height of triangle
b = length of triangle base
A = area of triangle
Recall the formula for area of a triangle :
A = 1/2 bh
Plug in what was given in the problem :
h = b - 5
A = 42
A = 1/2 bh
42 = 1/2 b (b-5)
Answer:
46.94 degrees (approx)
Step-by-step explanation:
Answer: ????
Step-by-step explanation: I don't understand
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