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how to find the angle in trigonometry, would apreciate if you could help out with this!

 Jun 12, 2017
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You will get something like sin(an angle)= a number from the figure, and then you take the inverse of it.

Example: 

\(\tan x = \dfrac{3}{2}\\ x = \tan^{-1}\dfrac{3}{2}\approx56.3^{\circ}\)Last step is done by calculator.

Even this one!!:

\(\sin x =\dfrac{1-\sqrt5}{2}\\ x = \sin^{-1}\dfrac{1-\sqrt5}{2}\approx 321.8^{\circ}\)

.
 Jun 12, 2017

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