Answer:
-(23/6)π
-(19/6)π
-3π
Step-by-step explanation:
cos2t=cos^2t-sin^2t => cos^2t=1-sin^2t =>cos2t=1-2sin^2t
sint=1-2sin^2t, if x=sint, thenn we have 2x^2+x-1=0
Here x=0.5, x=-1, as x=sint => sint = -1 solutions for -4π to -2π is t=-3π,
sint = 0.5 solutions for -4π to -2π is t= -(23/6)*π, and t = -(19/6)*π
Answer:
0,0
2,-1
-2,4
Step-by-step explanation:
Answer:
307/500
Step-by-step explanation:
Answer:
See the three attached images.
Step-by-step explanation:
image1 shows the intersection of b and c: . (green "football")
image2 shows the <u>complement</u> of a (outside a): (yellow)
image3 shows the intersection of those sets: (green "football with a bite out of it") :-)
The answer is
Let's build the expression piece by piece, translating sentences into formulas:
"3/5 times..."
"5 less than a number..."
So, the first block becomes
"3/5 times 5 less than a number..."
"...is no more than 27"
So, putting the pieces together, you have the answer