Final answer to the problem
true
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...
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1
Starting from the left-hand side (LHS) of the identity
$2\cos\left(x\right)^2-\cos\left(2x\right)$
Learn how to solve trigonometric identities problems step by step online.
$2\cos\left(x\right)^2-\cos\left(2x\right)$
Learn how to solve trigonometric identities problems step by step online. Prove the trigonometric identity 2cos(x)^2-cos(2x)=1. Starting from the left-hand side (LHS) of the identity. Apply the trigonometric identity: \cos\left(2\theta \right)=2\cos\left(\theta \right)^2-1. Simplify the product -(2\cos\left(x\right)^2-1). Multiply -1 times -1.
Final answer to the problem
true
