Evaluate
\frac{\sqrt{2}}{2}\approx 0.707106781
Quiz
Trigonometry
5 problems similar to:
- \cos \frac { \pi } { 4 } + 2 \cdot \sin \frac { \pi } { 4 }
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-\frac{\sqrt{2}}{2}+2\sin(\frac{\pi }{4})
Get the value of \cos(\frac{\pi }{4}) from trigonometric values table.
-\frac{\sqrt{2}}{2}+2\times \frac{\sqrt{2}}{2}
Get the value of \sin(\frac{\pi }{4}) from trigonometric values table.
-\frac{\sqrt{2}}{2}+\sqrt{2}
Cancel out 2 and 2.
\frac{1}{2}\sqrt{2}
Combine -\frac{\sqrt{2}}{2} and \sqrt{2} to get \frac{1}{2}\sqrt{2}.
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