Answer 5 and 6 thank you

Three coins are flipped. what is the probability that there will be at least two tails?

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.