A boat is heading towards a lighthouse, where Chee is watching from a vertical distance of 105 feet above the water. Chee measures an angle of depression to the
boat at point A to be 11°. At some later time, Chee takes another measurement and
finds the angle of depression to the boat (now at point B) to be 28°. Find the
distance from point A to point B. Round your answer to the nearest tenth of a foot if
necessary

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc