Rank the following atomic models for hydrogen from the earliest (simple) to the latest (most complex) as our understanding of the atom and its structure developed.

Use fundamental trigonometric identities to find the values of the functions.Given sec θ = for θ in Quadrant IV, find csc θ and cos θ.

Atomic and molecular spectra are:

Write an equation of the form y = A sin(Bx – C) + D with A > 0 to model the graph.

Find an equation for the ellipse described. Graph the equation.  Write all work on the submission paper. Center at (2, 6); focus at (5, 6); vertex at (7, 6)

Solve the triangle.  Round the lengths of sides and measures of the angles (in degrees) to 1 decimal place if necessary.     

Solve the triangle.  Round the lengths of sides and measures of the angles (in degrees) to 1 decimal place if necessary.      

Verify the Identity.  Show all steps on your submission paper. 

An imaginary image can be reproduced on a screen.

Use an appropriate Pythangorean identity to find the indicated value.Given tan t = – for < t < π, find the value of sec t.