Given that tan x=-(√5) /2, where X is an obtuse angle, how do you find the value of sin x/2 without using a calculator? - Quora
![Solution 34673: Graphing Sine, Cosine, and Tangent Functions on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators. Solution 34673: Graphing Sine, Cosine, and Tangent Functions on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.](https://education.ti.com/images/kbase/c34673ss1.jpg)
Solution 34673: Graphing Sine, Cosine, and Tangent Functions on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
![SOLVED: Q2 Using your calculator Each equation has 4 solutions between 3600 and 3600 sin x 0.407 X or or Use your calculator and the sin x -0.208 graphs to work out SOLVED: Q2 Using your calculator Each equation has 4 solutions between 3600 and 3600 sin x 0.407 X or or Use your calculator and the sin x -0.208 graphs to work out](https://cdn.numerade.com/ask_images/d8c788e5c2554f8e9cc435acdc4d4adf.jpg)