If sin Ф=1/3>0 and tan Ф<0; then Ф belongs to the second quadrant and cos Ф will be negative (cos Ф<0).
sin²Ф+cos²Ф=1
(1/3)²+cos²Ф=1
1/9+cos²Ф=1
cos²Ф=1-1/9
cos²Ф=8/9
cos Ф=⁺₋√(8/9)=⁺₋2√2 / 3
We have two possible solutions.
cos Ф=2√2 / 3 This solutions is not possible, because in this case cos Ф has to be negative (cos Ф<0)
cos Ф=(-2√2) / 3 this solutions is right.
answer:B. -2 square root 2 /3 (or (-2√2) /3 )
A positive
as there are 4 negetive multiplied
What do you meen they are numbers
Diversification means that you invest in "Multiple investments to split up your currency to the make more investments to profit more of your currency." Obviously depending on the percentage of potential growth in the investment you chose.
If you need me to corect this answer, I'd be more than happy to. <3
