What is cos(A+pi)+sin(A+pi) ?

The solution to cos(A+pi)+sin(A+pi) is -cos(A)-sin(A)

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simplify cos(A+pi)+sin(A+pi)

simplify

cos (A + π) + sin (A + π)

- cos (A) - sin (A)

Solution steps

cos (A + π) + sin (A + π)

Rewrite using trig identities

= - cos (A) + sin (A + π)

Rewrite using trig identities

= - cos (A) - sin (A)

cos (- πk)

sin (\frac{π}{2} - A)

cos (- π t - π)

cos (18 0^{\circ} + α)

3 sin (4 x + \frac{π}{1})

What is cos(A+pi)+sin(A+pi) ?
The solution to cos(A+pi)+sin(A+pi) is -cos(A)-sin(A)