What is the general solution for (-3+4cos^2(θ))/(1-2sin(θ))=a+bsin(θ) ?

The general solution for (-3+4cos^2(θ))/(1-2sin(θ))=a+bsin(θ) is

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(-3+4cos^2(θ))/(1-2sin(θ))=a+bsin(θ)

\frac{- 3 + 4 cos ^{2} ( θ )}{1 - 2 sin ( θ )} = a + b sin (θ)

θ = arcsin (\frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = π + arcsin (- \frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = arcsin (\frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = π + arcsin (- \frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn

Solution steps

\frac{- 3 + 4 cos ^{2} ( θ )}{1 - 2 sin ( θ )} = a + b sin (θ)

Subtract

a + b sin (θ)

from both sides

\frac{- 3 + 4 cos ^{2} ( θ )}{1 - 2 sin ( θ )} - a - b sin (θ) = 0

Simplify

\frac{- 3 + 4 cos ^{2} ( θ )}{1 - 2 sin ( θ )} - a - b sin (θ) : \frac{- 3 + 4 cos ^{2} ( θ ) - a ( 1 - 2 sin ( θ ) ) - b sin ( θ ) ( 1 - 2 sin ( θ ) )}{1 - 2 sin ( θ )}

\frac{- 3 + 4 cos ^{2} ( θ ) - a ( 1 - 2 sin ( θ ) ) - b sin ( θ ) ( 1 - 2 sin ( θ ) )}{1 - 2 sin ( θ )} = 0

\frac{f ( x )}{g ( x )} = 0 \Rightarrow f (x) = 0

- 3 + 4 cos^{2} (θ) - a (1 - 2 sin (θ)) - b sin (θ) (1 - 2 sin (θ)) = 0

Rewrite using trig identities

1 - a - 4 sin^{2} (θ) - sin (θ) b + 2 sin^{2} (θ) b + 2 sin (θ) a = 0

Solve by substitution

sin (θ) = \frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}, sin (θ) = \frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}; b \neq = 2

sin (θ) = \frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )} : θ = arcsin (\frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = π + arcsin (- \frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn

sin (θ) = \frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )} : θ = arcsin (\frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = π + arcsin (- \frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn

Combine all the solutions

θ = arcsin (\frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = π + arcsin (- \frac{b - 2 a + 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = arcsin (\frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn, θ = π + arcsin (- \frac{b - 2 a - 4 a ^{2} + 4 ab - 16 a + b ^{2} - 8 b + 16}{2 ( - 4 + 2 b )}) + 2 πn

2 sin^{2} (x) - 7 sin (x) = - 3, 0 \leq x \leq 2 π

sin^{2} (x) + cos^{2} (x) = cos (2 x)

(218) sin^{2} (x) + (126) sin (x) - 88 = 0

3 sin (3 x) = 0

cos (θ) csc (θ) = sin (θ) sec (θ)

What is the general solution for (-3+4cos^2(θ))/(1-2sin(θ))=a+bsin(θ) ?
The general solution for (-3+4cos^2(θ))/(1-2sin(θ))=a+bsin(θ) is