NDA2021MathematicsTrigonometric Ratios & IdentitiesActual
If 7 +24 =25 , then what is the value of ( + ) ?
Options
- A1
- B26 25
- C6 5
- D31 25
Correct answer
D. 31 25
Step-by-step solution
aligned & 7 +24 =25 & 7 25 + 24 25 =1 & Again, (7)^2+(24)^2=(25)^2 aligned Let 7 25 = and 24 25 = Then, + =1 aligned & ( + )= 2 & + = 2 = ( 2 - ) aligned Now, + = ( 2 - )+ ( 2 - )