JEE Main2004MathematicsTrigonometric Ratios & IdentitiesActual
Let , be such that < - < 3 . If + =- 21 65 and + =- 27 65 , then the value of - 2 is
Options
- A- 3 130
- B3 130
- C6 65
- D- 6 65
Correct answer
A. - 3 130
Step-by-step solution
+ =- 21 65 and + =- 27 65 . Squaring and adding, we get aligned & 2+2 ( - )= 1170 (65)^2 & ^2 ( - 2 )= 9 130 ( - 2 )= -3 130 ( 2 < - 2 < 3 2 ) . aligned