Final answer to the problem
Step-by-step Solution
How should I solve this problem?
- Prove from LHS (left-hand side)
- Prove from RHS (right-hand side)
- Express everything into Sine and Cosine
- Exact Differential Equation
- Linear Differential Equation
- Separable Differential Equation
- Homogeneous Differential Equation
- Integrate by partial fractions
- Product of Binomials with Common Term
- FOIL Method
- Load more...
Starting from the left-hand side (LHS) of the identity
Using the sine double-angle identity: $\sin\left(2\theta\right)=2\sin\left(\theta\right)\cos\left(\theta\right)$, where $2\theta=4$
Learn how to solve trigonometric identities problems step by step online.
$\sin\left(4\right)$
Learn how to solve trigonometric identities problems step by step online. Prove the trigonometric identity sin(4)=2sin(2)cos(2). Starting from the left-hand side (LHS) of the identity. Using the sine double-angle identity: \sin\left(2\theta\right)=2\sin\left(\theta\right)\cos\left(\theta\right), where 2\theta=4. Since we have reached the expression of our goal, we have proven the identity.