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Angle is in standard position and (-5, -7) is a point on the terminal side of 0.
What is the exact value of sec 0 in simplest form with a rational denominator?

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DWRead

Answer:

Step-by-step explanation:

Don't use 0 as a substitute for θ.  0 is always 0.

cosθ = -5/(2√15)

secθ = 1/cosθ = -2√15/5

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