How do you determine whether the sign of a trigonometric function (sine, cosine, tangent) is positive or negative when dealing with half angles?

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2

Alarge cheese pizza costs $18. each topping you add on costs $1.50. how much would it cost to get a large cheese pizza with cc toppings added? write your answer as an expression

Choose an object tha is about the sane length as real baseball bat explain how to estimate its length in feet