How do I find angle A?

What is the ratio of the length of an object in yards to the length of the same object in miles?

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if