1. Find (to 4 significant figures)
(a) cos 130o
(b) sin 359.5o
(c) tan 135o
(d) sin 179o
(e) cos 179o
(f) tan 179o
2. Complete the table (read your answers from the trigonometric graphs not from your calculator):
3. (a) Sketch the graphs of y = sin x and y = cos x for 0o ≤ x ≤ 360o
Draw and label the y-axis clearly.
(b) Give the coordinates of the two points where sin x = cos x , as accurately as possible.
(c) For what x value does cos x = − 1 ?
(d) What is the range of both functions?
