Proofs using Trigonometric Identities

Practice: Proofs using Trigonometric Identities

Which of the following is equivalent to sin⁡2θ+4sin⁡θ+3cos⁡2θ\dfrac{\sin^2\theta+4\sin\theta+3}{\cos^2\theta}?
More Proofs using Trigonometric Identities Questions:
More Proofs using Trigonometric Identities Questions:
More Proofs using Trigonometric Identities Questions: