Trigonometry deals with right angled triangles. So, we must be clear about the Pythagoras theorem first. Pythagoras theorem states that, ” the square of the length of the hypotenuse is equal to the sum of squares of the lengths of other two sides of the right-angled triangle, written as: $\text{h}^2 \ = \ \text{p}^2 \ + \ \text{b}^2$. Now, we know the basics of Pythagoras theorem. So we can move ahead to learn how to recognize hypotenuse, perpendicular and the base. Always in a right angled triangle, the opposite side to the right angle will be the hypotenuse (h). And the side opposite to the reference angle will be the perpendicular(p). Finally the remaining side will be our base (b). Let’s understand this relation with some figures. From the above-mentioned three figures, I hope we have cleared our concept regarding the hypotenuse, perpendicular and the base of the right angled triangle. Now, we are good to dive in the Trigonometric Ratios.
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