`((22pi)/15)^c` is equal to:
a) `246^o`
b) `264^o`
c) `224^o`
d) `426^o`

Diagonal A C\ a n d\ B D of trapezium A B C D , in which A B || D C , intersect each other at Odot The triangle which is equal in area of A O D is A O B (b) B O C (c) D O C (d) A D C

If A B ,\ B C\ a n d\ C D are equal chords of a circle with O as centre and A D diameter, then /_A O B= (a) 60^0 (b) 90^0 (c) 120^0 (d) none of these

Two equal circles touch each other externally at C and A B is a common tangent to the circles. Then, /_A C B= 60o (b) 45o (c) 30o (d) 90o

In an isosceles triangle A B C if A C=B C and A B^2=2A C^2 , then /_C= 30o (b) 45o (c) 90o (d) 60o

If the vector product of a constant vector vec O A with a variable vector vec O B in a fixed plane O A B be a constant vector, then the locus of B is (a).a straight line perpendicular to vec O A (b). a circle with centre O and radius equal to | vec O A| (c). a straight line parallel to vec O A (d). none of these

In Figure, A O B is a straight line. If /_A O C+/_B O D=85^0, then /_C O D= (a) 85^0 (b) 90^0 (c) 95^0 (d) 100^0

Hydrogen and oxygen combine to form water according to the following equation: 2H_(2)+O_(2) to 2H_(2)O . A mixture of 22.4 L of H_(2) and 22.4 L of O_(2) at 100^(@)C is ignited. Calculate the volume of steam produced.

Hydrogen and oxygen combine to form water according to the following equation: 2H_(2)+O_(2) to 2H_(2)O . A mixture of 22.4 L of H_(2) and 22.4 L of O_(2) at 100^(@)C is ignited. What gas if any will be present on cooling to room temperature?

If the vector product of a constant vector vec O A with a variable vector vec O B in a fixed plane O A B be a constant vector, then the locus of B is a. a straight line perpendicular to vec O A b. a circle with centre O and radius equal to | vec O A| c. a straight line parallel to vec O A d. none of these

Two lines A B\ a n d\ C D intersect at O such that B C is equal and parallel to A Ddot Prove that the lines A B\ a n d\ C D bisect at O