Use a Calculator to Find 6 Trig Function Values (TI-84 Plus)

The calculator used in this problem is a TI-84 Plus and the answers are rounded to 4 decimal places. The calculator is first put in degree mode and the following trigonometric function values are found: (a) cos158.3°, (b) sin(-147.5°) - using the negative key and not the subtraction key, (c) tan(67°39') - this problem is evaluated two ways, (d) csc(251.4°). As there is no cosecant key on the calculator, this problem is found using 1/sin(251.4°). Then the calculator is put into radian mode to find (e) cos(4) and (f) cot(-3.51) = 1/tan(-3.51).

Timestamps
0:00 Introduction
0:19 cos158.3°
1:32 sin(-147.5°)
2:25 tan(67°39')
4:18 csc(251.4°)
5:32 cos(4)
6:44 cot(-3.51)