Question

Cos 45°=
plz give me answer urgently​

Answer 1

$\huge\purple{\mid{\fbox{\tt{☆answer}}\mid}}$

0.7071

ᴇxᴘʟᴀɴᴀᴛɪᴏɴ

The exact value of cos 45 degrees is 1/√2 (in surd form), which is also equal to sin 45 degrees. It is an irrational number, equal to 0.7071067812… in decimal form. The approximate value of cos 45 is equal to 0.7071.

Answer 2

Answer:

$cos 45° = \frac{1}{ \sqrt{2} }$