Chapter 2
sin-1 (sin 13 pi/6) =
pi/6
Convert -135 degrees to radians
-3pi/4
Solve the equation in the interval [0, 2p)
cos x sin x -sin x =0
0, pi
Find the rectangular coordinates for P
(4sqrt(3), -5pi/3)
(2sqrt(3), 6)
Find U+V
U={-2, 3}, V={8, 1}
{6, 4}
What is tan (5pi/6)
-sqr(3)/3
Convert 9pi/4 to degrees
405
Solve the equation in the interval [0, 2p)
2 sin2x - 5 sin x +2 =0
pi/6, 5pi/6
Find the polar coordinates with r greater than or equal to 0. (-6 sqrt(2), -6 sqrt (2))
(12, 5 pi/4)
Find the vector with initial point P(0,3) and terminal point Q(3, -1).
{3, -4}
Find cos t, given cot t = -1/2, csc t = sqr(5)/2
cos t = -sqr(5)/5
Find the exact value of sin 315 degrees
-sqr(2)/2
Solve the equation in the interval [0, 2p)
2cos2x -7cos x +3 =0
pi/3, 5pi/3
Express in rectangular form
r=3+3 cos theta
(x2 +y2 -3x)2
Find U dot V
U= {4, -3}, V= {9, -8}
60
Find the phase shift
y= -cos (pi/2 x +pi/6)
-1/3
2sqr(3)/3
Find the exact value of the expression
cos 15 degrees
sqrt(2+sqr(3))/2
write in polar form -1 +i
sqrt (2) (cos 3pi/4 +i sin 3pi/4)
Are U and V orthogonal
U= 2i+j, V=i +3j
No
Find the period for y=4csc (2x+pi)
1
Find the exact value of tan(sin-1 2/5)
2/sqr(21)
Find the exact value of the expression
tan pi/8
sqrt(2) - 1
Find a rectangular-coordinate equation for the curve by eliminating the parameter.
x=1-t2, y=1+t
x=2y-y2
Find the cross product
A=i - j, b=2j - k
sqrt(6)/6 i + sqrt(6)/6 j + sqrt (6)/3 k