Answer:
1) -0.669
2) -0.669
3) 0.669
Step-by-step explanation:
Since we are subtracting or adding multipled of pi, we will either obtain 0.669 or -0.669 as our answer for each of the three different questions.
Cosine is the x-coordinate in our orderes pairs. If our point ends up on the right side of the y-axis, the cosine will be positive. If our point ends up on left side, it will be negative.
Choose a thetha (I'm going to choose it in degrees) in the first quadrant to help with a visual.
If theta=70:
1) then 180-70=110 which is in second quadrant, so our cosines will be opposite in value.
2) then 180+70=250 which is in third quadrant, so our cosines will be opposite in value.
3) then 4×180-70=720-70=650 =1(360)+290 which ends up in the 4th quadrant which means the consines will have the same value.
Answer:
3/500
Step-by-step explanation:
3/5 x 1%
=> 3/5 x 1/100
=> 3/500
Hope it helps you
23/10 = 2 and 3/10
I hope this helped
I've answered this before, but only partially. I'm not sure about the second part, but I think the first one is 10
Answer:
Step-by-step explanation:
I'm taking this to mean
x = 0.255555555555... If this is not correct, leave a note. Multiply by 100
100 x = 25.55555555555555 ... Divide by 10
10x = 2.55555555555555 ... Subtract
90 x = 23
x = 23/90
Try putting 23/90 in your calculator. You will find it is 0.25555555... just what you were given
