(a) Solve the given equation. 2 cos2(theta) + sin(theta) =1
theta= ____
(b) The measure of an angle in standard position is given. Find two positive angles and two negative angles that are coterminal with the given angle (Enter your answers in comma separated lists).
-5pi/4
____rad
Consider the following differential equation:
x2y"-2xy'+(x2+2)y=0
Given that y1=x cos x is a solution, find a second
linearly independent solution to the differential equation.
Write the general solution.
solve each equation find all solutions in the interval 0 2π)
leave your answers in the exact form.
a) sin θ = cos(2θ)
b) sin (2θ) + cos(2θ) = √2/2
c) cos^3 + cos^2 - 3 cosθ - 3 = 0
d) sin 5x - sin 3x = cos 4x
e)sin(3x) + sin^2(x) + cos^2(x) = tan^2(x) - sec^2(x)