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Popular >

-1/(cos(pi/4))

Solution

- \frac{1}{cos ( \frac{π}{4} )}

Solution

- 2

+1

Solution steps

- \frac{1}{cos ( \frac{π}{4} )}

Use the following trivial identity:

cos (\frac{π}{4}) = \frac{2}{2}

= - \frac{1}{\frac{2}{2}}

Simplify

- \frac{1}{\frac{2}{2}} : - 2

= - 2

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Frequently Asked Questions (FAQ)

What is the value of -1/(cos(pi/4)) ?
The value of -1/(cos(pi/4)) is -sqrt(2)