K Keri M New member May 18, 2010 #1 1. Use Cramer's Rule to solve for y: {3x + 4y + z = 0 {y - 3z = -3 {x + y + z = 1 2. Solve sin^2 2x = 1 given that 0 degrees </= x < 360 degrees 3. Show: 2 tan x/ tan^2 x + 1 = sin 2x
1. Use Cramer's Rule to solve for y: {3x + 4y + z = 0 {y - 3z = -3 {x + y + z = 1 2. Solve sin^2 2x = 1 given that 0 degrees </= x < 360 degrees 3. Show: 2 tan x/ tan^2 x + 1 = sin 2x
