Trig Ratio
tan(pi/4)=
(Most simplified form)
1
acos(1/2)=
(exact value)
pi/3
They are periodic function.
What is the type of all trigonometric functions?
sin^2(x)+cos^2(x)=1
What is pythagorean identity of sine and cosine?
120 degree
= ? radian
2pi/3 radian
cos(25pi/3)=
(Most simplified form)
1/2
atan(-1)=
(exact value)
-pi/4
It is amplitude.
What is the length from midline to maximum point of sine function
cos(pi/2-x)=sin(x)
What is cofunction identity of sine?
(or cosine)
5pi/12 radian
= ? degree
75 degrees
cot(-41pi/3)=
(Most simplified form)
sqrt(3)/3
(exact value)
-pi/6
They are sinusoidal functions
What is the type of sine and cosine functions among all trigonometric functions?
cos^2(x)-sin^2(x)
What is the double angle formula of cos(2x)?
420 degree
= ? radian
7pi/3 radian
sin(-15 degree)=
(Most simplified form)
[sqrt(2)-sqrt(6)]/4
cot(asin(-1))=
(exact value)
0
They are sine and cosine functions.
Which basic functions do not have discontinuity?
sin(x)cos(y)-cos(x)sin(y)
What is the difference formula of sin(x-y)?
-13pi/9 radian
= ? degrees
-260 degrees
sec(23pi/12)=
(Most simplified form)
sqrt(6)-sqrt(2)
(exact value)
-pi/6
tan(x) and cot(x)
What is the 2 basic trig functions with period equal to pi?
(1-cos(x))
SQRT(-----------)
(1+cos(x)))
What is half angle formula of tangent?
1 radian
= ? degrees
180/pi degrees