Answer:
θ = 240
and
cos(θ) = -0.5
Step-by-step explanation:
Theta is in the third quadrant, that meansit goes from 180 to 270 degrees
Then,
cos^2 (θ) =1/4
cos (θ) = ± 1/2
θ = arccos(0.5)
θ = 60
But in the third quadrant
θ = 180 + 60 = 240
θ = 240
and
cos(θ) = -0.5
Answer:
-35 - 2
Step-by-step explanation:
2=5
3=10
4=17
5=??
Answer: 26
There is a pattern. It is squared then added with one.
For visual reference-
2=5 (2*2=4, 4+1=5)
3=10 (3*3=9, 9+1=10)
4=17 (4*4=16, 16+1=17)
5=?? (do the same thing)
so
5=26 (5*5=25, 25+1=26)