What is the value of pisin(pi)+cos(pi) ?

The value of pisin(pi)+cos(pi) is -1

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pisin(pi)+cos(pi)

π sin (π) + cos (π)

- 1

Solution steps

π sin (π) + cos (π)

Use the following trivial identity:

sin (π) = 0

Use the following trivial identity:

cos (π) = (- 1)

= π 0 - 1

Simplify

= - 1

sin (15 0^{\circ}) + cos (24 0^{\circ}) - tan (31 5^{\circ})

arctan (\frac{7.9253}{22.356 - 12.184 - 7.061})

arccos (\frac{775}{2500})

cos (- \frac{π}{4}) + sin (- \frac{π}{4})

arctan (2) (\frac{6}{8})