Question

Everyone know that derivative of sin∆ is cos∆. Then, what is the derivative of sin(∆+π/2) ??​

Answer 1

Yo

Let y = sin(∆ + π/2)

To find derivative of y

Using chain rule,

y' = cos(∆ + π/2). d(∆ + π/2)/d∆

y' = 1 × cos( ∆ + π/2)

y' = cos(π/2 + ∆)

y' = sin ∆

Hope it helps !!

TGA