Straight Lines
General
Grade 11
Question:
Suppose ABC is a triangle with 3 acute angles A,B and C. The point whose coordinates are <span class="math-inline">(\cos B - \sin A, \sin B - \cos A)</span> can be in the -
first and 2nd quadrant
second
third and 4th quadrant
second quadrant only
Step-by-Step Solution
Key Concept: General
equation of the required circle is \left( x + \frac{31}{18} \right)^{2} + \left( y + \frac{23}{12} \right)^{2} = \left( 3 + \frac{5}{36} \sqrt{949} \right)^{2}
Correct Answer: 5