Respuesta :
Answer:
Exact Form:
√ 2/ 2
Decimal Form:
0.70710678 …
Step-by-step explanation:
Find the exact value using trigonometric identities.
It’s same as: cos45
You can always subtract or subtract FROM 360.
360-315=45
Exact value of cos45 is √2/2
You can always subtract or subtract FROM 360.
360-315=45
Exact value of cos45 is √2/2