Question

0

Answer 1

Hi,
If I'm understanding your question, you have to think about the relation
\[\sin \left( x + \frac{ \pi }{ 2 } \right) = \cos (x)\]

Answer 2

I think this will shift the sine function to the left,
to the right use
\[\sin \left( x - \frac{ 3\pi }{ 2 } \right) = \cos(x)\]

Answer 3

tht means sin x = cos x
=> tan x = 1
=> tan x = tan 45 deg
=> x = 45 deg is one angle