[" Te value of sint,cos? tan "3,0014,8006,000000" is "],[" (1) Positive "],[" Negative "],[" 3) Zoo "],[" Whay be positive and Negative "]

The value of sin1.cos2.tan3.cot4.sec5.cos ec6 is (1) Positive (2) Negative (3) Zero (4) May be positive and Negative

If vec(j) and vec(E ) are current and electric field inside a current carrying conductor at an instant then vec(j). Vec( E ) is (1) Positive (2) Negative (3) Zero (4) May be positive or negative

If vec(j) and vec(E ) are current density and electric field inside a current carrying conductor at an instant then vec(j). vec( E ) is (1) Positive (2) Negative (3) Zero (4) May be positive or negative

If vec(j) and vec(E ) are current and electric field inside a current carrying conductor at an instant then vec(j). Vec( E ) is (1) Positive (2) Negative (3) Zero (4) May be positive or negative

(i) If a xx(-1)=-30, is the integer a positive or negative? (ii) If a xx(-1)=30, is the integer a positive or negative?

Show that if a and b are real, the principal value of arg a is 0 or π according as a is positive or negative and that of bi is pi/2 or -pi/2 according as b is positive or negative.

Show that if a and b are real, the principal value of arg a is 0 or π according as a is positive or negative and that of bi is pi/2 or -pi/2 according as b is positive or negative.

Show that if a and b are real, the principal value of arg a is 0 or pi according as a is positive or negative and that of b is pi/2 or -pi/2 according as b is positive or negative.

When is the magnification produced by a lens (1) positive (2) negative ?

If a ,b ,c are sides of a scalene triangle, then value of {:|(a, b, c), (b, c, a), (c, a, b)|:} is (a) positive (b) negative (c) non-positive (d) non-negative