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Mathematics 8 Online
OpenStudy (walkingcontradiction):

Two boats start their journey from the same point A and travel along directions AC and AD, as shown below: ABC is a right triangle with measure of angle ABC equal to 90 degrees and length of AB equal to 100 feet. There is a point C on BD such that measure of angle ACB is 60 degrees and measure of angle ADC is 30 degrees. What is the distance, CD, between the boats?

OpenStudy (walkingcontradiction):

OpenStudy (walkingcontradiction):

284.3 ft 115.5 ft 230.9 ft 173.2 ft

OpenStudy (rohan):

Bro, are you familiar with trig?

OpenStudy (rohan):

if yes, we can solve

OpenStudy (mrnood):

First look at the triangle ACD You know one angle is 30 you can get angle C very easily so you will quickly be able to tell me if ACD is isosceles If so it will make this easy...

OpenStudy (rohan):

230.9

OpenStudy (rohan):

using tan func we get "TOA" which is Tan= OPP/ADJ then, all we need is to define BD=x and CD=y We need CD

OpenStudy (mrnood):

@rohan 230.9 is not correct

OpenStudy (rohan):

eventually, you'll end up with|dw:1464868189631:dw|

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