Solution 34771: Calculating Sine, Cosine, and Tangent on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
How do I calculate sine, cosine, and tangent on the TI-83 Plus and TI-84 Plus family of graphing calculators?
The following examples will demonstrate how to compute sine, cosine, and tangent.
Please Note: For these examples, the calculator's angle setting will need to be changed.
1) Press [MODE] key.
2) Scroll down to "RADIAN", scroll right to highlight
"DEGREE" and press [ENTER]. This will change the calculator's angle setting to
Degree mode.
3) Press [CLEAR] to return to the home screen.
For Example: Calculate the sine of 30°.
1) Press [SIN] [3] [0].
2) Press [)] [ENTER].
For Example: Calculate the cosine of 60°.
1) Press [COS] [6] [0].
2) Press [)] [ENTER].
For Example: Calculate the tangent of 26.57°.
1) Press [TAN] [2] [6] [.] [5] [7].
2) Press [)] [ENTER].
Please Note: Since the calculator's angle setting is set to Degree, there's no need to input the degree symbol ( ° ) behind the value.
Please see the TI-83 Plus and TI-84 Plus Family guidebooks for additional information.
Last updated: 6/29/2023