SOLUTION: Suppose a radius of the unit circle makes an angle with the positive horizontal axis whose tangent equals 5 and another radius of the unit circle makes an angle with the positive h
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Question 566841: Suppose a radius of the unit circle makes an angle with the positive horizontal axis whose tangent equals 5 and another radius of the unit circle makes an angle with the positive horizontal axis whose tangent equals -1/5. Explain why these two radii are perpendicular to each other.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Because the tangent of the angle formed by a radius to the unit circle and the positive horizontal axis is equal to the slope of the line containing the radius segment (sine is the rise, cosine is the run, and tangent is sine divided by cosine)
John
My calculator said it, I believe it, that settles it
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