NDA2011MathematicsTrigonometric Ratios & IdentitiesActual
If = ^2 , then what is ^2 (1+ ^2 ) equal to?
Options
- A1
- B0
- C^2
- D2
Correct answer
A. 1
Step-by-step solution
aligned & = ^2 ^2 (1+ ^2 ) & = (1+ ) aligned aligned & = + ^2 & = ^2 + ^2 aligned =1 [ = ^2 ]