What is 3(x^2+2x-3)-4(4x^2-7x+5) equal to show step by step explanation
1 answer:
You might be interested in
Answer:
see explanation
Step-by-step explanation:
Note that cos315° = cos45° and sin315° = - sin45° and
cos45° = sin45° = =
Hence
12(cos315° + isin315°)
= 12(cos45° - isin45°)
= 12( - i
)
= 6 - 6i
Answer:
arc length = 4π units
Step-by-step explanation:
The arc length is calculated as
arc = circumference of circle × fraction of circle
= 2πr ×
= 2π × 8 ×
= 2π × 2
= 4π units ← exact answer