Question

Find tan(30) (its a right triangle)

Answer 1

Use the 30-60-90 triangle.

Tan is opposite over adjacent.


`(1)/( √(3) )`
Square roots cannot be on the bottom.


`(1)/( √(3) ) * ( √(3) )/( √(3) )`
The bottom cancel out the square root bar.

Your answer is:


`( √(3) )/(3)`
(It's best to memorize the 30-60-90 and the 45-45-90 triangles during trigonometry. It helps a lot.)

Hope this helps!

:)