trigonometry
posted by riza .
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
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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