Trig Basics
The graph of cos(x) has a Y-intercept when it achieves its m____m?
What is a maximum?
Sine and Cosine are equal at this angle in the fundamental period.
What is pi/4 and (3pi)/4 ?
\cos(\theta - (3pi)/2)=
What is
-\sin\theta?
Someone in our Precalculus class solves every single problem in the book. 🧐
Who is A.J.?
1-cos^2x=
sin^2x
This is the fundamental period of a standard sine and cosine functions.
What is 2pi
The midline of the graph of y= 3 cos(x-pi)+2.
What is 2?
sin(pi/12)\cdot cos(pi/4) + cos(pi/12)\cdot sin(pi/4) =
What is
\sqrt3/2
Acute angle for which
sinx=sqrt3-sinx
What is pi/3, (2pi)/3?
sinu cosv + cosu sin v =
What is sin(u+v)?
I try and try but am not moving up or down. Where am I on my sine?
0, pi, 2pi
The min and max of the function:
y=3cos(.5x+pi)-4.
What is -7 and -1?
(tan(pi/15) + tan((2pi)/5))/(1-tan(pi/15)dot tan((2pi)/5)) =
What is
tan((7pi)/15)
Solution to
sin^3x=sinx
in the fundamental period.
What is 0, pi/2, pi, (3pi)/2 ?
(2tanu)/(1-tan^2u)
What is
tan2u?
Angle whose sine is -0.5 in a unit circle.
What is
210^o or 330^o?
Or
(7pi)/6 or (11pi)/6 ?
Identify the phase shift in the function: y=-2sin(3(x-3pi/2)) +1.
What is
(2pi)/3?
With u and v in Quadrant III and sinu=-7/25 and cosv=-4/5 , cos(u+v) =
What is
3/5 or 0.6?
Solution to 2sin^2x-sinx-1=0 in the interval [0,2pi)
What is
(7pi)/6, (11pi)/6, pi/2?
sinAcosB =
What is
1/2[sin(A+B)+sin(A-B)]?