Category: 0. BLOG

For x in [0, 2π], solve sin x = sin 2x A π/6, 5π/6 B π/2, 3π/2 C π/4, 3π/4

Convert 225° into radians in simplest form A 5π/4 B π/4 C 3π/4 D 7π/4 Explanation Use the conversion radians

If sin x = 3/5 and x is in Quadrant I, then cos x equals A 4/5 B −4/5 C

For any angle x, the reciprocal of sec x is A sin x B tan x C csc x D

In a right triangle, sin θ is defined as A Adjacent/Hypotenuse B Opposite/Adjacent C Hypotenuse/Opposite D Opposite/Hypotenuse Explanation For an

If A and B are finite with |A|=7, |B|=5 and |A∩B|=3, then |A∪B| is A 10 B 11 C 9

For finite sets A and B, the correct counting formula for |A ∪ B| is A |A|+|B| B |A|+|B|−|A∩B| only

If A={1,2,3} and B={2,3,4}, then A Δ B equals A {2,3} B { } C {1,2,3,4} D {1,4} Explanation Symmetric

In set-builder form, the set of even natural numbers is A {2,4,6,…} B {x|x even} C {1,3,5,…} D {x|x prime}

A set is usually written as a collection of A Ordered pairs only B Random statements C Well-defined objects D