Graph sine, cosine and tangent

01

Press these keys

MODEY=WINDOWGRAPH

02

Walkthrough

1
Set angle mode
Use RADIAN for π-based intervals and DEGREE for degree intervals.
2
Set x-window
For radians, useful scales include Xscl=π/2; enter π using 2nd → ^.
3
Interpret branches
Tangent has discontinuities; apparent vertical links are plotting artifacts.

03

Worked example

Graph y=2sin x for 0≤x≤2π.

NORMAL FLOAT AUTO REAL MPXmin=0 Xmax=2π Xscl=π/2Ymin=−3 Ymax=3

AnswerAmplitude 2, period 2π, zeros at 0, π and 2π.