Question

Which equation is shown graphed below? A -21 -TT 0 TT 2TT -15 O y = y = sin( a + 元一2 O = 2 ) y = sin(0-5) e- = cos(e +) y = cos(0-5) e- T O y = cos ( 0 2 O = e 2

Answer 1

Given the graph of a trigonometric function

The shown graph is for the function:

$y=\cos x$

But as we know,

$\sin (x+\frac{\pi}{2})=\cos x$

So, the function can be written as :

$y=\sin (x+\frac{\pi}{2})$

So, the answer will be the first option