1. Given sine of x equals negative 12 over 13 and cos x > 0, what is the exact solution of cos 2x? A. negative 119 over 169
B. negative 144 over 169
C. 119 over 169
D. 144 over 169

2.How many solutions exist for the equation cos 2θ − sin2θ = 1 on the interval [0, 360°)?
A. 0
B. 1
C.2
D. 3

Solve 3x-18=2y and 5x-6y=6 by elimination show work

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

To diagonalize an nxn matrix a means to find an invertible matrix p and a diagonal matrix d such that a pdp d p ap or [1 3 dh epap 3 let a=-3 -5 -3 3 3 1 step 1: find the eigenvalues of matrix a "2's" step 2: find the corresponding eigenvectors of a step 3: createp from eigenvectors in step 2 step 4 create d with matching eigenvalues.