Page 23 - Student Hand Book - Scaffolding - L&T CSTI Serampore

Sin (y) = perpendicular/hypotenuse

Cos (y) = base/ hypotenuse

Tan (y) = perpendicular /base = (Sin/Cos)

Sin Cos Tan
0 0 1 0
30 1/2 1/√3
0
0
45 1/√2 1/√2 1

0
60 1/2 √3
0
90 1 0 Infinity
Coordinate system: -

Draw mirror image of fig. along x-axis, y-axis & x=y axis

Participant Handbook : Scaffolding 23