Mathematics · essential
Trigonometric ratios in a right triangle for JEE
Trigonometrical identities and trigonometrical functions
Formula
\(\sin\theta=\dfrac{\text{perpendicular}}{\text{hypotenuse}},\quad \cos\theta=\dfrac{\text{base}}{\text{hypotenuse}},\quad \tan\theta=\dfrac{\text{perpendicular}}{\text{base}}\)
Variables: \(\theta\) = acute angle of a right triangle.
Conditions: Valid for acute angles in right triangle definition.
Basic evaluation of trigonometric ratios from geometry.