SOLUTION: Write the first expression in terms of the second if the terminal point determined by t is in the given quadrant cos(t), sin(t); Quadrant IV

Question 1197485: Write the first expression in terms of the second if the terminal point determined by t is in the given quadrant cos(t), sin(t); Quadrant IV
Answer by ikleyn(52797) (Show Source): You can put this solution on YOUR website!
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If the first expression is cos(t) and the second expression is sin(t),
with t in quadrant IV, then


    cos(t) = ,


where the square root represents the positive number.


It is because the cosine function is positive / (non-negative) in QIV.

Solved.

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