INTRODUCTORY EXERCISES

(1) Determine whether each of the following statement are true or false.

 (a) cos 0o = 0

 (b) sin 30o = /2

 (c) sin 45o = 1/2

 (d) cos 45o = /2

 (e) cos 60o = 1/2

 (a) false, cos 0o = 1

 (b) false, sin 30o = 1/2

 (c) false, sin 45o = /2

 (d) true

 (e) true