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Starting from the left-hand side (LHS) of the identity
Learn how to solve trigonometric identities problems step by step online.
$\sec\left(y\right)\cos\left(y\right)$
Learn how to solve trigonometric identities problems step by step online. Prove the trigonometric identity sec(y)cos(y)=1. Starting from the left-hand side (LHS) of the identity. Applying the secant identity: \displaystyle\sec\left(\theta\right)=\frac{1}{\cos\left(\theta\right)}. Multiplying the fraction by \cos\left(y\right). Simplify the fraction \frac{\cos\left(y\right)}{\cos\left(y\right)} by \cos\left(y\right).