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°
_____
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°
Answer: line R
Step-by-step explanation: because it crossing through the starting and ending points
Answer:
B
Step-by-step explanation:
Answer:
56 minutes
Step-by-step explanation:
use ratio to solve for x,
750 gal 1200 gal
______ = __________
35 min x
= 
solve for x = (1200 * 34 )/750 = 56 min
