Define a variable and write an expression for the phrase. 4 minus a number
2 answers:
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so.. let's us eliminate, say "z" first, so for that, let's pick the 1s and 2nd equations there
so, that's our first two-variables resultant
let's pick other two, and again, eliminate the same "z" variable, this time, let's use the 2nd and 3rd equations
now, we have two two-variables equations, let's use them then
and say, we'll eliminate the "y" variable from them
The radian measures of the central angle of the sector is 2
Given,
In the question:
Perimeter of sector is 4 times of its radius .
To find the radian measures of the central angle of the sector is?
Now, According to the question:
We know:
The perimeter of the circumference is = 2r
If the perimeter of a sector is 4 times its radius.
then, the arc measure of the sector is (4r-2r) → 2r
So, if 2× radians (full circle) has a length → 2
r
X radians → 2× r (the sector)
X=2× r ×(2×)/(2
r)
X = 2
Hence, The radian measures of the central angle of the sector is 2.
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