SOLUTION: If the terminal side of angle theta passes through the point (-4,3), what is the value of cos theta? A.) 3/5 B.) -3/5 C.) 4/5 D.) -4/5

Algebra ->  Algebra  -> Trigonometry-basics -> SOLUTION: If the terminal side of angle theta passes through the point (-4,3), what is the value of cos theta? A.) 3/5 B.) -3/5 C.) 4/5 D.) -4/5      Log On

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Question 425192: If the terminal side of angle theta passes through the point (-4,3), what is the value of cos theta?
A.) 3/5
B.) -3/5
C.) 4/5
D.) -4/5
Answer by lwsshak3(6518) About Me  (Show Source):
You can put this solution on YOUR website!
If the terminal side of angle theta passes through the point (-4,3), what is the value of cos theta?
A.) 3/5
B.) -3/5
C.) 4/5
D.) -4/5
..
Given requirement gives us a right triangle in quadrant II where the the cos is negative and sin positive. This is also known as a 3-4-5 triangle with the hypotenuse=5
Therefore, cos of reference angle theta=-4/5 or ans D above