NDA2017MathematicsTrigonometric Ratios & IdentitiesActual
If =3 ( +2 ) , then the value of ( + )+2 is equal to
Options
- A-1
- B0
- C1
- D2
Correct answer
B. 0
Step-by-step solution
Given, =3 ( +2 ) ( +2 ) = 1 3 Apply componendo and dividendo rule aligned & ( +2 )+ ( +2 )- = 1+3 1-3 & 2 ( + ) 2 ( + ) = 4 -2 =-2 & ( + ) =-2 & ( + )=-2 ( + )+2 =0 aligned