Page 2 - Trigonometry
P. 2

Trigonometry


               Trigonometric Ratios

               Opposite & Adjacent Sides during a Right Angled

               Triangle
               In the ΔABC right-angled at B, BC is that the side opposite to

               ∠A, AC is that the hypotenuse and AB is that the side
               adjacent to ∠A.





























               Trigonometric Ratios

               For the right ΔABC, right-angled at ∠B, the trigonometric

               ratios of the ∠A are as follows:
                                                                              
                   •  sin A = opposite side/hypotenuse =
                                                                              
                                                                               
                   •  cos A = adjacent side/hypotenuse =
                                                                               
                                                                                 
                   •  tan A = opposite side/adjacent side =
                                                                                 
                                                                                  
                   •  cosec A = hypotenuse/opposite side =
                                                                                  
                                                                               
                   •  sec A = hypotenuse/adjacent side =
                                                                              
                                                                                 
                   •  cot A = adjacent side/opposite side =
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