The vertex angle bisector divides the triangle into two congruent right triangles. The sine of half of the vertex angle will be half of the base divided by the side (from the definition of the sine of an angle). Then the total vertex angle is ...
α = 2×arcsin(3.5/5) ≈ 88.9°
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Using the Law of Cosines, the vertex angle can be found as
arccos((7^2 -5^2 -5^2)/(-2*5*5)) = arccos(1/50) ≈ 88.9°
Not really good at that sorry but one remaders are left over from the problem
For part a it’s sal will leave a $20 tip for part b sals food is $78.22 including tax and tip
Answer:
x = -1
Step-by-step explanation:
