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Factor the polynomial $\cos\left(a\right)^2+\sin\left(a\right)^2\cos\left(a\right)$ by it's greatest common factor (GCF): $\cos\left(a\right)$
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$\cos\left(a\right)\left(\cos\left(a\right)+\sin\left(a\right)^2\right)$
Learn how to solve simplify trigonometric expressions problems step by step online. Simplify the trigonometric expression cos(a)^2+sin(a)^2cos(a). Factor the polynomial \cos\left(a\right)^2+\sin\left(a\right)^2\cos\left(a\right) by it's greatest common factor (GCF): \cos\left(a\right). Apply the trigonometric identity: \sin\left(\theta \right)=\sqrt{1-\cos\left(\theta \right)^2}, where x=a. Cancel exponents \frac{1}{2} and 2.