Well we do know that 7x9 = 63
I only know 1 way but I dont know if it is Distributive
(3+4) 3 x 3
36/15 = 8/a
multiply a .. on both sides
a×36/15= 8
multiply 36/15 reciprical on both sides
a= 8 × 15/36
a= 120/36
a= 3.33
I would convert -2pi / 3 to degrees first by multiplying by 180degrees / pi. It equals 120 degrees.
120 degrees is in quadrant II, which is 90 degrees plus 30 degrees. It is 60 degrees from the 180 degrees.
So the reference triangle you use is 60 degrees.
Cos60 = 0.5
sin60 = sqrt(3) /2
But in quadrant II the only trig ratio that's positive is sin; all others are negative.
So cos120 = -0.5
sin60 = sqrt(3) /2
<span>Keeping in mind that points on unit circle are (cos, sin), the point is </span>(-0.5, <span>sqrt(3) /2).
</span>
8 x 5 = 32 is the expression. Since Sergei caught 4 striped fish that all weigh the same, we know that we can multiple the weight of one fish by the amount of fish he caught.
Since he also caught another fish that would make the total of fish 5.
