A14-foot tree casts an 18-foot shadow. find the angle of elevation from the tip of the shadow to the top of the tree. round the answer to the nearest tenth. a. 37.9° b. 38.9° c. 51.1° d. 52.1°

An isosceles triangle has two sides of equal length, a, and a base, b. the perimeter of the triangle is 15.7 inches, so the equation to solve is 2a + b = 15.7. if we recall that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side, which lengths make sense for possible values of b? select two options.