The angle of depression of a boat from a cliff 60m high is 10°. How far ,to the nearest metre ,is the boat from the base of the cliff?
Sorry for the basic question I'm not great at math, correct answer is 340m apparently btw
Always draw the triangle first. Then add the numbers and angles you know. (angle of 'depression' means that from the horizontal it's 10degrees, so you'd use 80degrees as the angle in the triangle)
Think about SOH CAH TOA, and pick the formula for the info you have.
In this diagram we have the length
adjacent (60m) and we want the
opposite length. Using this, pick out the formula with o and a, which is the one with tan, and put the numbers into the formula, and solve for 'o' (or x as I've called it here).
I hope this helps