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Popular >

cos^2(pi/4)-sin^2(pi/4)

Solution

cos^{2} (\frac{π}{4}) - sin^{2} (\frac{π}{4})

Solution

0

Solution steps

cos^{2} (\frac{π}{4}) - sin^{2} (\frac{π}{4})

Use the following trivial identity:

cos (\frac{π}{4}) = \frac{2}{2}

Use the following trivial identity:

sin (\frac{π}{4}) = \frac{2}{2}

= (\frac{2}{2})^{2} - (\frac{2}{2})^{2}

Simplify

= 0

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Frequently Asked Questions (FAQ)

What is the value of cos^2(pi/4)-sin^2(pi/4) ?
The value of cos^2(pi/4)-sin^2(pi/4) is 0