Aradar operator on a ship discovers a large sunken vessel lying parallel to the ocean surface, 150 m
directly below the ship. the length of the vessel is a clue to which wreck has been found. the radar
operator measures the angles of depression to the front and back of the sunken vessel to be 52° and 70°.
how long, to the nearest tenth of a metre, is the sunken vessel?

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Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.