What is expand cos(pi(t-1))+sin(pi(t-1)) ?

The solution to expand cos(pi(t-1))+sin(pi(t-1)) is -cos(pit)-sin(pit)

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expand cos(pi(t-1))+sin(pi(t-1))

expand

cos (π (t - 1)) + sin (π (t - 1))

- cos (π t) - sin (π t)

Solution steps

cos (π (t - 1)) + sin (π (t - 1))

cos (π (t - 1)) = - cos (π t)

= - cos (π t) + sin (π (t - 1))

sin (π (t - 1)) = - sin (π t)

= - cos (π t) - sin (π t)

(1 + \frac{5 i}{n})^{2}

\frac{x - 2}{( x + 4 ) ( x ^{2} + 3 x - 4 )}

\frac{3 ( 5 X + 2 ) + ( 15 X ^{2} )}{3 X + 1}

(k^{2} + 1) (1.1) + (\frac{k - k ^{2} - 1}{3}) (3)

(2 a + 2 b - 2 c) (- 2 a + 2 b - 2 c)

What is expand cos(pi(t-1))+sin(pi(t-1)) ?
The solution to expand cos(pi(t-1))+sin(pi(t-1)) is -cos(pit)-sin(pit)