Π radians = 180°
5 π / 4 = 5 · 180° / 4 = 900° / 4 = 225°
cos ( 5π/4 ) = cos 225°
With the unit circle we can find the exact value:
cos 225° = - √2 / 2 ≈ - 0.7071
Answer:
Step-by-step explanation: bro use sin=opposite/hypotenuse
Answer:
8x -4
Step-by-step explanation:
Answer:$257.5
Step-by-step explanation: add all the amounts then divide by 4
