If cos(θ) = -4/5, how do I find all the exact values of the other 2 primary trig ratios (sin and tan) and all possible approximate values of θ (to the nearest degree), when 0° ≤ θ ≤ 360°?

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite