Lecture 1 of 5

7.1   TRIGONOMETRIC         RATIOS & IDENTITIES

Learning Outcomes

At the end of the lesson, students should be able to:

a) State and use trigonometric ratios sin θ,

     cos θ, tan θ, sec θ, cosec θ and cot θ.

b) Use                        , sin(90 – θ)= cos θ, cos (90 – θ)=sin θ,

    tan (90 – θ)= cot θ.

c) Use some special angles