1
Solve for sin(x):
4sin(x)=2
How many solutions will the equation cos(x) = sqrt(2)/2 from [0,2pi]
2
Solve cos(x) = -1/2 from [0,2pi]
2pi/3 4pi/3
solve 2cos(x)-sqrt(2) = 0 for [0,2pi]
pi/4, 7pi/4
H(t) = 23/12 sin(t) +5 models the height in rainbows (marshmallow, of course) of a pendulum as it swings back and forth. Find all the times from [0, 3pi] when the pendulum is 5 'mallows from the ground.
0, pi, 2pi, and 3pi
solve for tanx:
tanx/4 - 1/2=2
10
How many solutions will the equation tanx=1 have from [0,2pi]
2
solve tanx=-1 for [pi/2, 3pi/2]
5pi/4
solve 2/3cos(x)-2sqrt(3)/3=-sqrt(3)/3 for [0,2pi]
pi/6, 11pi/6
In which quadrants is cos(x) positive?
QI and QIV
In which quadrants is Sin(x) positive?
Q1 & Q3