How do i know the function in solving the missing sides of a right triangle ?

Question

anonymous · Answer

missing side of triangle can be find out using pythagoras theorem as 
$$perpendicular ^{2}+ base ^{2 }  = hypotenous ^{2}$$

welshfella · Answer

If you are given the measure of an angle and one side you use the trigonometrical functions sine, cosine or tangent.

welshfella · Answer

sine = opposite / hypotenuse
cosine = adjacent/hypotenuse
tangent = opposite/adjacent

phi · Answer

anonymous · Answer

oh thanks :)