JEE Main2010MathematicsTrigonometric Ratios & IdentitiesActual
Let ( + )= 4 5 and let ( - )= 5 13 , where 0 , 4 , then 2 =
Options
- A56 33
- B19 12
- C20 7
- D25 16
Correct answer
A. 56 33
Step-by-step solution
array ll ( + )= 4 5 & ( + )= 3 4 ( - )= 5 13 & ( - )= 5 12 2 = ( + + - )= 3 4 + 5 12 1- 3 4 5 12 = 56 33 array