Use this space for
8 Which expression always equals 1?
computations.
2
2
(1) cos
x
sin
x
(3) cos x
sin x
2
2
(2) cos
x
sin
x
(4) cos x
sin x
9 What are the sum and product of the roots of the equation
2
6x
4x
12
0?
2 __
(1) sum
; product
2
3
2 __
(2) sum
; product
2
3
2 __
(3) sum
2; product
3
2 __
(4) sum
2; product
3
10 Given
ABC with a
9, b
10, and m∠B
70, what type of
triangle can be drawn?
(1) an acute triangle, only
(2) an obtuse triangle, only
(3) both an acute triangle and an obtuse triangle
(4) neither an acute triangle nor an obtuse triangle
1
11 When x
1 is divided by x
1, the quotient equals
(1) 1
(3) x
1 __
1 __
(2)
(4)
x
x
[4]
Algebra 2/Trigonometry – January ’12