trig exam 1 Flashcards
how to find the 2 coterminal angles
add and subtract 365° or 2π
how to find the complimentary angle
90° or π/2 minus angle
how to find the supplementary angle
180° or π minus angle
arc length variable
s
central angle variable
θ
arc length equation
s = rθ
area of a sector of a circle equation
A = 1/2 r^2 θ
linear speed variable
v
angular speed variable
w
linear speed equation
v = s/t
angular speed equation
w = θ/t
trig identity
sin^2 θ + cos ^2 θ = 1
how to find the reference angle
acute angle along the x-axis
equation for graphing
d + a sin (bx-c) OR
a sin (bx-c) + d
period equation
2π/b
amplitude equation
absolute value of a
horizontal shift equation
c/b
vertical shift equation
d
how to know if there is a reflection
if a is negative, there is a reflection
LE equation
bx-c = 0
RE equation
bx-c = 2π