A lifeboat is sighted from a rescue helicopter directly overhead at a distance of 75 meters. After rescuing two survivors, the helicopter returns to the same coordinates, but finds that the lifeboat has drifted from the original spot. The helicopter sights the lifeboat at an angle of depression of 46 o 55’. How far has the lifeboat drifted?

can you rephrase the question ? it is unclear : -)

step-by-step explanation:

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step-by-step explanation:

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1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.