STD 6 MATHS CH 13 SVADHYAY 13.2

The value of "2sin"^(2)(pi)/(3)-"cos"^(2)(pi)/(6)+"tan"^(2)(pi)/(6) is equal to A. 7/12 B. 13/12 C. 13/4 D.- 13/12

4/13 + 9/13 + 2/13 = ?/13

6a^(2) - 13a + 6 =?

6.If a=2+-8 and =4+3-4 then the magnitude of a+h is equal to :(6)13)( a) 13 (d) 13

13^3-13^2=

4,6, 9, 13(1)/(2) ?