Trigonometric Identities
sin²(x)+cos²(x) = ?
What is 1?
Simplify: sin(x)/cos(x)
What is tan(x)?
Given cos(x)=2/3, sec(x)=?
What is 3/2?
Amplitude of y=-5 cos(-pi*x)
What is 5?
Solve 2cos(x)=sqrt(3) in [0, 2*pi)
What are pi/6 and 11*pi/6?
1 + tan2(x) = ?
What is sec2(x)?
Simplify: tan(x)/cot(x)
What is tan2(x)?
tan(45o)-cos(180o)=?
What is 2?
Period of y=3cos(pi*x)
What is 2?
Solve tan(x)-1=0 in [0, 2*pi)
What are pi/4 and 5pi/4?
cot2(x) + 1 = ?
What is sec2(x)?
cos(x)csc(x)tan(x)=?
What is 1?
Given the point (4, -3) on the terminal side of angle x, sin(x)=?
What is -3/5?
Vertical shift of y=-2 sin(x/4)+5
What is 5 units up?
Find all solutions to the equation 2sin(x)+sqrt(2)=0
What are (5*pi/4)+2*pi*n and (7*pi/4)+2*pi*n, where n is an integer?
cos (x+y) = ?
What is cos(x)cos(y)-sin(x)sin(y)?
cot(x)sec(x)=?
What is csc(x)?
Given sin(x)=1/6 and sec(x) negative, cos(x)=?
What is -sqrt(35)/6?
Period of y=-2 sin(x/4)
What is 8*pi?
Find the solution set to the equation
2cos2(x)-cos(x)-1=0
in the interval [0, 2*pi)
What is {0, 2*pi/3, 4*pi/3}?
sin(2x)=?
What is 2sin(x)cos(x)?
sin(x)[tan(x)cos(x)-cot(x)cos(x)]=
What is 1-2cos2(x)?
HINT: Subtraction Formula
What is [sqrt(6)-sqrt(2)]/4?
Range of y=sin(2x)+3
What is [2, 4]?
Find the solution set to the equation 2sin2(x)=sin(x)
What is {pi*n, (pi/6)+2*pi*n, (5*pi/6)+2*pi*n}, where n is an integer?