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The point (3, -4) is on the terminal side of an angle 0. What is cos 0? A. -3/5, B. 3/5, C. -3/4, D. 3/4, E. 3
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The point (3, -4) is on the terminal side of an angle 0. What is cos 0? A. -3/5, B. 3/5, C. -3/4, D. 3/4, E. 3

User Dilavar Malek
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8.0k points

1 Answer

5 votes
well, notice the picture below

recall cosine is adjacent over hypotenuse

what's the hypotenuse? well, you can just use the pythagorean theorem to get "c" or hypotenuse
The point (3, -4) is on the terminal side of an angle 0. What is cos 0? A. -3/5, B-example-1
User Dawesign
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7.9k points
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