Question

A submarine travels 4.2 km due East from its base and then turns and travels due North for 6.5 km.
How far away is the submarine from its base?
Give your answer rounded to 1 DP.

Answer 1

Answer:

7.74 km away (57.1 degree)

Step-by-step explanation:

it will form a right angle triangle, thus, (4.2^2 + 6.5^2)^0.5 = 7.74 km

angle, A =  tan^-1(6.5/4.2) = 57.1 degree