
Make sure there is a small D at the top of the calculator screen, and if not, go into the calculator settings to change the angle unit to 'degrees' (or 'deg.'). Note that scientific calculators need to be used for trigonometry and should be in degrees mode.

To make \(x\) the subject, rearrange the equation by doing the inverse operation. Pythagoras’ theorem can be used to find the distance between two points.Substitute the values of the sides and angle into the trigonometric equation. Special Triangles: Isosceles and 30-60-90 Calculator: This calculator performs either of 2 items: 1) If you are given a 30-60-90 right triangle, the calculator will determine the missing 2 sides.Ĭhoose the trigonometric ratio that contains the two sides that have been labelled. Triangle Calculators Right Triangle Calculator Enter any two known values for a right triangle below to calculate the edge lengths, altitude, angles, area, perimeter, inradius, and circumradius.

Label the two sides that contain information in the diagram with hypotenuse \(h\), opposite \(o\) or adjacent \(a\).The third side of an isosceles triangle is.

For a right-angled triangle, follow these steps to calculate the length of a side, \(x\), when another side and an angle Ɵ is given: Calculate sides, angles of an isosceles triangle step-by-step Equations What I want.
