MODERATE EXERCISES - Trigonometric Functions

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(1) Find the value of the trigonometric functions.

(a) sin 120^o

(b) cos 135^o

(c) sin 240^o

(d) cos 330^o

(e) sin 150^o

( Click On HINT For Some Help , Click On SOLUTION To See The Answer )

(2) Evaluate and simplify.

 (a) 2cos 45o + cos 180o

 (b)         1
     -----------------
     sin 30o + cos 60o

( SOLUTION )

(3) Find the values of the following, using the given diagram.

(a) sin

(b) cos

(c) cot

(d) sec

( SOLUTION )

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