8.876 to the nearest whole number
8.876 can be rounded to 9 because if we have a number greater than 5 we round to next number i.e is 9 but if we have a number smaller than 5 then we round to the previous number that is 8.
So your answer is 9
First solve for the trig function 'cot'
![cot^2 x = \frac{15}{5} = 3](https://tex.z-dn.net/?f=cot%5E2%20x%20%3D%20%5Cfrac%7B15%7D%7B5%7D%20%3D%203)
Next take the sqrt of both sides (include plus/minus)
![cot x = \pm \sqrt{3}](https://tex.z-dn.net/?f=cot%20x%20%3D%20%5Cpm%20%5Csqrt%7B3%7D)
Now take reciprocal of both sides, this will change trig function to 'tan'
(cot = 1/tan)
![tan x = \pm \frac{1}{\sqrt{3}} = \pm \frac{\sqrt{3}}{3}](https://tex.z-dn.net/?f=tan%20x%20%3D%20%5Cpm%20%5Cfrac%7B1%7D%7B%5Csqrt%7B3%7D%7D%20%3D%20%5Cpm%20%5Cfrac%7B%5Csqrt%7B3%7D%7D%7B3%7D)
Finally use the unit circle or inverse tan on your calculator to find x.
There will be 4 solutions, one for each quadrant.
Answer:
first one with -1...21
Step-by-step explanation:
only one that follows quadratic formula format
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Answer:
we know that, Volume of cube=a³
Let volume of 1st cube be 2x with side a and other be x with side A (according to given ratio)
Step-by-step explanation:
ATQ: 2x=a³ and, x=A³
a=³√2x and, A=x
we know that, surface area of cube is 6a²
Thus, surface area of 1st cube = 6(³√2x)²
= 6³√4x²
Surface area of 2nd cube=6(x)²=6x²
Ratio of S.A=(6³√4x²)÷(6x²)
Ratio of S.A=³√4:1
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