Question

Find the value of cos(4530) its urgent plsss

Answer 1

Answer:

Step-by-step explanation:

if it is degree

then

4530= 360$\times$ 12 +210

sin(360$\times$ 12 +210)

sin(210)

sin(180+30) (this is  in third quadrant and in this quadrant sin is -ve and at 180 it does not change)

-sin (30)

= -1/2

and we know that

1 -$\sin^2 x$ = $\cos^2 x$

1-(-1/2)^2= 1-1/4

= 3/4

so

$\cos (4530)= \sqrt{(3/4)}\\\\\cos (4530)= \sqrt{(3}/2)$