AP EAMCET2009MathematicsTrigonometric Ratios & Identities
⁻¹ 2+ ⁻¹ 3=x x is equal to
Options
- A1 2 (3 5 +2 10 )
- B1 2 (3 5 -2 10 )
- C1 2 (12+2 50 )
- D1 2 (12-2 50 )
Correct answer
C. 1 2 (12+2 50 )
Step-by-step solution
aligned & Given, ⁻¹ 2+ ⁻¹ 3=x & ( ⁻¹ 2+ ⁻¹ 3 )= x & ( ⁻¹ 2 ) ( ⁻¹ 3 ) & + ( ⁻¹ 2 ) ( ⁻¹ 3 ) & = x & x= ( ⁻¹ 1+2^2 ) & ( ⁻¹ 1+3^2 )+2 3 & x=( 5 10 +6) 2 2 & = 1 2 (12+2 50 ) & aligned