If `3a=4b=6c` and `a+b+c=27sqrt(29)`, then `sqrt(a^2+b^2+c^2)` is (a) `3sqrt(29)` (b) 81 (c) 87 (d) None of these

If3a=4b=6c and a+b+c= 27sqrt(29) then sqrt(a^(2)+b^(2)+c^(2)) is equal to

If acostheta-bsintheta=c , then asintheta+bcostheta= (a) +-sqrt(a^2+b^2+c^2) (b) +-sqrt(a^2+b^2-c^2) (c) +-sqrt(c^2-a^2-b^2) (d) None of these

[(sqrt(81))^(2)]^(2)=(?)^(2)(a)8(b)9(c)4096(d)6561(e) None of these

The value of sqrt(5+2sqrt(6)) is (a) sqrt(3)-sqrt(2) (b) sqrt(3)+sqrt(2) (c) sqrt(5)+sqrt(6) (d) none of these

If a 0, then sqrt(a)sqrt(b) is equal to (a) -sqrt(|a|b(b))sqrt(|a|bi(c))sqrt(|a|b)(d) none of these