Pre Calc Cheat Sheet

Trig Ratios

S o/h C a/h T o/a

csc sec cot

Radians → Degrees = r*180/pi

Degrees → Radians = r*pi/180

Converting between polar and rectangular

x= rcos0

y=rsin0

r²=x²+y²

tan0= y/x

Reference Angle = Acute and Positive

]Rose = r = a sin/cos(n0)

Cardioid r = a +- a sin/cos 0

Limacon r = a +- b sin/cos 0

Lemniscate r² = a² sin/cos 20