Word problem on calculus

Word problem on calculus

This problem is from my calculus class, I've spent hours on it and can't figure it out

"A submarine dives at an angle of 10° to the surface of the water. The submarine travels at a speed of about 12 feet per second. About how deep is the submarine, to the nearest whole foot, after a minute?"

If you could help, thanks xoxo
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Re: Word problem on calculus

This problem may have been in a Calculus text but it doesn't require any Calculus. It is a trigonometry problem. Since "the submarine travels at a speed of about 12 feet per second" in one minute it will have traveled 12(60)= 720 feet. You have a right triangle with one angle 10 degrees and hypotenuse 720 feet. What is the depth (the length of the side opposite the 10 degree angle)?
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