`0-:(-12)=?`

cosA+cos(12 0^(@)+A)+cos(12 0^(@)-A)=

Evaluate: (-7) times (0) times (-12)

If A=[(2x,0),(x,x)] and A^(-1)=[(1,0),(-1,2)] , then the value of x is

Fill in the blanks. (a)(-8) +[ ]=0 (b) 13+[ ] =0 (c) 12+(-12)= [ ] (d) (-4)+[ ]=-12 (e) [ ] -15=-10

Find the distance between the pair of points: (0,0), (-5, 12)

If A=[(0,-1,2),(1,0,3),(-2,-3,0)], then A+2A^t equals (A) A (B) -A^t (C) A^t (D) 2A^2

Solve x^(2)-x-12=0 .

If 2((1,3),(0,x))+((y,0),(1,2))=((5,6),(1,8)) , then find the value of x+y.

If A=[{:(0,-1,2),(4,3,-4):}] and B=[{:(4,0),(1,3),(2,6):}] then verify that (i) (A')'=A (ii) (AB)'=B'A'

Atomic number of Iodine is 53 and its mass number is 125. Radius of iodine is approximately. (R_0 = 1.2 xx 10^(-15) m)