The sine of an angle is positive in_quadrants.
Correct answer: A. First and Second
- A. First and Second
- B. Second and fourth
- C. First and third
- D. Third and fourth
Explanation
Quadrants are the four regions formed by the intersection of the x-axis and y-axis on a Cartesian coordinate system. They're numbered counterclockwise starting from the positive x-axis:1. First Quadrant: Both x and y values are positive.2. Second Quadrant: x values are negative, y values are positive.3. Third Quadrant: Both x and y values are negative.4. Fourth Quadrant: x values are positive, y values are negative.
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About Vectors and Equilibrium
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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