Trigonometry
Which quadrants have positive values for cosine ?
1 and 4
If discriminant = 0, what. do the roots look like ?
real and equal
Is y=x3 an odd or even function ?
odd
The circumference of a circle is 44. Find radius.
7
Which number is neither prime nor composite ?
1
If SinA = 12/13 (acute), what is cosA ?
5/13
For 2x2-5x+k=0 , find k if roots are equal.
25/8
what is the range of f(x)=x2 ?
0,infinity
Convert 210 degrees to radians.
7pi/6
what is the degree of the polynomial 4x3-7x+2
3
Simplify sin2 +cos2
1
If the roots of a quadratic eq. are P and Q, find eq. with p+1 and q+1.
x2-(p+q+2)x+(pq+p+q+1)=0
If g(x)=x+1 and f(x)=2x, find f(g(2)).
A wheel makes 1/3 of a full revolution. How many radians does it rotate through ?
2pi/3
What is the term for a pair of angles that add up to 180 degrees ?
Supplementary angles
Simplify sin2A-cos2A
-cos(2A)
If roots of a quadratic eq. are 4 and -3, form the equation.
x2-x-12=0
If f(x)=underroot of (x-2), find its domain.
x is greater than or equal to 2
The radius of a wheel is 21 cm and it rotates 120 degrees. Find arc length.
14 pi cm
What do we call a sequence where each term is obtained by multiplying the previous one by a fixed number.
Geometric progression
Solve 2cos2x-1=0 for where x is greater than 0 degree and less 180 degree.
45 degree, 135 degree
One root of a quadratic equation is 4. The sum of the roots is 9. Form the equation.
x2-9x+20
For f(x)=x2, restrict the domain so that the inverse exists.
Restrict x to be greater than or equal to zero.
If the arc length of a sector is 15 and radius is 9, find the angle in radians.
5/3 radians
what do we call a matrix with equal rows and columns ?
Square matrix