Its c.
If you will substitute those numbers to the pair of equations, both will be true.
1=-3+4
1=3-2
Answer:
Step-by-step explanation:
z=xi+yj
x=-1.2=r cosθ (say)
y=-1.6=r sinθ(say)
square and add
r²cos²θ+r² sin ² θ=(-1.2)²+(-1.6)²=1.44+2.56=4
r²=4
r=2
divide
tanθ=y/x=-1.6/(-1.2)=16/12=4/3
θ=tan ^{-1}(4/3)≈53.13°
so polar coordinates are (2,53.13°)
70 minus 4 equals 66 and 70x66=420 and the answer is 420.
Answer:
135
Step-by-step explanation:
180- 45= 135
