What is the derivative of $sin(x + (π/2))$ ?

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Answer 1 · 2018-05-05T14:22:38

The derivative is $-sinx$ .

Rewrite using the sum rule:

$=sinxcos(pi/2) + cosxsin(pi/2)$

$= cosx$

We know from basic differentiation rules that $d/dx(cosx) =-sinx$ .

Hopefully this helps!

What is the derivative of sin(x + (π/2)) sin(x + (π/2)) ?