Find the reference number for t Find the exact value of sin

Find the reference number for t = Find the exact value of sin(19/) and cos Find the exact value of tan and cot If the terminal point determined by t is find sin t, cos t and tan t.

Solution

5. t=-22pi/3

reference angle = 22pi/3 - 7pi =pi/3

And pi/3 lies in first quadrant

Therefore quadrant is quadrant first .