Answer:
Use the website Desmos
Step-by-step explanation:
Type it in on the right side of the screen to see the graph,
make sure to understand why it is doing that though, its useless to be in school if you dont want to learn. and if you dont learn, good luck in life.
4 sin^2 θ + 13cos^2 θ = 7
sin^2 θ = 1 - cos^ θ
4 - 4cos^2 θ + 13cos^2 θ = 7
9cos^2 θ = 3
cos^2 θ = 1/3
cos θ = # (1/3) # - square root
Square root of (1/3) has +1/3 and -1/3 as values of cos
Find the key angle by doing the cos inverse of #1/3
K.A = cos^-1 #(1/3) = 0.955
θ lies in all 4 quadrants
The values of θ are:
θ = 0.955, 2.186, 4.096, 7.23
Ignore 0.955, 2.186, 4.096, 7.23 as they are out of range pi/2 = 1.571
The the value of θ = 0.955 = 0.96 (to 2 d.p) radian
Hope it helped!
Answer:
Slope is - 4.
Step-by-step explanation:
The given points are (-1,10), (1,2), (3,-6) and (5,-14).
Now, we have to find the slope of the line containing these points.
We can pick any two points to find the slope. Let they are (-1,10) and (1,2).
Now, we know that the slope of a straight line passing through any two known points and is given by
........... (1)
Therefore, the slope of the straight line through the given points will be
{From equation (1)} (Answer)
Answer:
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Step-by-step explanation:
Answer:
The answer is A :))
Step-by-step explanation: