1.09. trigonometric identities the angle θ lies in quadrant IV. sin θ = -2/3 what is cos θ?

options:
2/3
-2/3
√5/3
-√5/3

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?