jakehaggerJesus jakehaggerJesus

14-02-2017
Mathematics

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The point (3, -4) is on the terminal side of an angle . What is cos ?
A) -3/5
B) 3/5
C) -3/4
D) 3/4
E) 3

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Аноним Аноним

14-02-2017

this is in the fourth quadrant where the cosine is positive
By pythagoras the hypotenuse is 5

so the cosine is 3/5 B

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