How to solve this question by using trigonometric identities:it is given that tan(90°-θ)=1/2, find the value of (sin(90°-θ)/1-tanθ) +2cos(90°-θ) . thanks!

An energy plant is looking into putting in a system to remove harmful pollutants from its emissions going into earth's atmosphere. the cost of removing the pollutants can be modeled using the function c = 25000p/100 -p what is the vertical asymptote?

What is the y intercept of f(x)=(1/2)^x?

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2