Homework Help: trigonometry

Posted by riza on Monday, December 10, 2012 at 5:52am.

a submarine at the surface of the ocean makes an emergency dive, its path making an angle of 21 degree with the surface. if it goes 300m long its download path, how deep will it be? what horizontal distance is it from its starting point?

trigonometry - Reiny, Monday, December 10, 2012 at 1:08pm
simple sine and cosine ratio problem

sin 21 = depth/300
depth = 300sin21°
= 10.75 m

cos 21 = horizontal distance/ 300
hd = 300cos21 = 280.07 m

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