Answer:
see explanation
Step-by-step explanation:
using the identity
cos2a = 2cos²a - 1 , then
cos2a
= 2[ 
(a + 
) ]² - 1
= 2 [ 
(a² + 
+ 2) ] - 1
= (a² + ) + 1 - 1
= (a² + ) ← thus verified
Answer:
dude i tried to answer this one for weeks on end, sorry i wasnt much help
Step-by-step explanation:
Answer:
his is the day that immediately proceeds the last and final spring sabbat, ... The fact that Beltane and Samhain happen in unison twice a year lends ... You know all those Halloween recipes you've been saving on Pinterest for years now? ... Halloween and Samhain product brands as you can all year long.
Step-by-step explanation:
The nearest number to 15.04 it 15
So basically, 0.724 is being rounded,
when you are rounding, if the number next to it is less than 5, it stays the same if it is above 5 it increases 1. So we are rounding 7 correct? the number next to it is 2, and 2 is below 5. Therefore 0.724 rounded is 0.700
