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Applying the pythagorean identity: $\cos^2(\theta)=1-\sin(\theta)^2$
Learn how to solve simplify trigonometric expressions problems step by step online.
$1-\sin\left(a\right)^2$
Learn how to solve simplify trigonometric expressions problems step by step online. Simplify the trigonometric expression cos(a)^2. Applying the pythagorean identity: \cos^2(\theta)=1-\sin(\theta)^2. Applying the sine identity: \displaystyle\sin\left(\theta\right)=\frac{1}{\csc\left(\theta\right)}. The power of a quotient is equal to the quotient of the power of the numerator and denominator: \displaystyle\left(\frac{a}{b}\right)^n=\frac{a^n}{b^n}. The power of a quotient is equal to the quotient of the power of the numerator and denominator: \displaystyle\left(\frac{a}{b}\right)^n=\frac{a^n}{b^n}.