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6. Area of sector ?
- A= 1/2 r^2 theta
- A= 1/2 r theta
- A= x^2
7. Area of cuboid ?
- A = 2wl + 2hw
- A = 2wl + 2lh + 2hw
- A = 2wl + 2lh
8. Equation of a perpendicular line ?
- y - y2= m (x - x2)
- y - y1= m (x - x1)
- y2 - y1= m (x2 - x1)
9. y= ?
- -b ± √(b2-4ac) ] / 2a
- -b ± √(b4-4ac) ] / 2a
- -b ± √(b2-4ac) ] / 2ac
10. What is the same as tan theta?
- sin theta / cos theta
- cos theta / sin theta
- sin theta
11. Area of a triangle?
- 1/2 absinC
- a/sinA = b/sinB = c/sinC
- log2
12. Area of segment?
- A= 1/2 r^2 theta
- A= 1/2 r^2 theta ( theta - sin theta)
- A= theta - sin theta
13. Sum of arithmetic series?
14. Gradient of line (x1,y1) and (x2,y2) ?
- m= (y - y1)/ (x - x1)
- m= (y2 - y1)/ (x2 - x1)
- m= (y1 - y2)/ (x1 - x2)
15. Arc length?
- x^2
- l=r theta
- l= r theta ^2
16. What does cos^2 theta + sin^2 theta equal?