Answer:
i
Step-by-step explanation:
The pattern is as follows
i^1 = i
i^2 = -1
i^3 = -i
i^4 = 1
Following this pattern, i^45 = i.
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Answer:
C) 
Step-by-step explanation:
By the cos double angle formula, we know
Substituting
into the formula, we get
.
The answer is C.
Answer:
multiply
Step-by-step explanation:
i know this from 3rd grade
Answer:
12
Step-by-step explanation:
1:2:4
let josh=1x
james=2x
john=4x
josh has nine sweets less than john
4x-1x=9
3x=9
x=3
john's sweet=4x
4(3)=12