The speed of sound in water is 1498 m/s. a sonar signal is sent straight down from a ship at a point just below the water surface, and 1.80 s later the reflected signal is detected. how deep is the ocean beneath the ship?

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

the answer is a

step-by-step explanation:

because if you put 1 in to the square root of x it equals 300.