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Solution: What are the values of sin B and cos B in the 4th quadrant?

What are the values of sin B and cos B in the 4th quadrant?

Problem Statement: ME Board October 1996

Angles are measured from the positive horizontal axis, and the positive direction is counter clockwise. What are the values of sin B and cos B in the 4th quadrant?

  • A. sin B > 0 and cos B < 0
  • B. sin B < 0 and cos B < 0
  • C. sin B > 0 and cos B > 0
  • D. sin B < 0 and cos B > 0

Problem Answer:

The values are sin B < 0 and cos B > 0

Solution:

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