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Summary&Test

LESSON 3: Trigonometric Functions & Graphs

The Basic Graphs: y = sin x; y = cos x; y = tan x:

x (radians)													0
x (degrees)	-360	-330	-300	-270	-240	-210	-180	-150	-120	-90	-60	-30	0	30	60	90	120	150	180	210	240	270	300	330	360
sin x (exact)	0			1			0			-1			0			1			0			-1			0
sin x (approx.)	0	0.5	0.87	1	0.87	0.5	0	-0.5	-0.87	-1	-0.87	-0.5	0	0.5	0.87	1	0.87	0.5	0	-0.5	-0.87	-1	-0.87	-0.5	0

x (radians)													0
x (degrees)	-360	-330	-300	-270	-240	-210	-180	-150	-120	-90	-60	-30	0	30	60	90	120	150	180	210	240	270	300	330	360
cos x (exact)	1			0			-1			0			1			0			-1			0			1
cos x (approx.)	1	0.87	0.5	0	-0.5	-0.87	-1	-0.87	-0.5	0	0.5	0.87	1	0.5	0.87	1	-0.5	-0.87	-1	-0.87	-0.5	0	0.5	0.87	1

x (radians)											0
x (degrees)	-180	-150	-145	-120	-100	-90	- 80	-60	-45	-30	0	30	45	60	80	90	100	120	135	150	180
tan x (exact)	0		1						-1		0		1						-1		0
tan x (approx.)	0	0.58	1	1.73	5.67		-5.67	-1.73	-1	-0.58	0	0.58	1	1.73	5.67		-5.67	-1.73	-1	-0.58	0

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