The tangent of an angle is positive in first and _ quadrant.
Correct answer: B. Third
- A. Fourth
- B. Third
- C. Second
- D. Fifth
Explanation
The tangent of an angle is positive in the first quadrant and the third quadrant. In the first quadrant, both the sine and cosine are positive, so the tangent which is the ratio of sine to cosine, is positive. In the third quadrant, the sine is negative, the cosine is negative, but their ratio (tangent) is positive.
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Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
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