131 equals 7 12/17 so the answer is 7 12/17
Answer:
That is truth
Step-by-step explanation:
Remember that sin(x-y)= sin(x)*cos(y) + sin(y)*cos(x)
Lets evaluate x=360, y=theta
sin(360-theta)=sin(360)*cos(theta) -sin(theta)*cos(360)
Also, remember that sin(360)=sin(0)=0
Cos(360)=cos(0)=1
Thus
Sin(360-theta)=-sin(theta)
<u><em>subsitution</em></u> means subsituteing something for another and getting the answer
the way to do this is to get an easy equation and make it equal to only one placeholder so
y=2x
so you can subsitute y for 2x anywhere you see a y
3x+y=5
subsitutute
3x+2x=5
5x=5
divide both sides by 5
x=1
subsitute
y=2(1)
y=2
<u><em>elimination</em></u> is when you elimintate one of the terms by adding the equations together and canceling som of them out
so y=2x
subtract y from both sides
0=2x-y or 2x-y=0
add this to the second equation
3x+2x+y-y=0+5
5x=5
divide both sides by 5
x=1
subsitute
y=2(1)
y=2
x=1
y=2
Answer:
Anyone???
Step By Step
Answer:
see explanation
Step-by-step explanation:
∠ BOA = 360° - 250° = 110° ( sum of angles round a point )
∠ BDA is half the central angle, that is
∠ BDA = 0.5 × 110° = 55°
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The angle between a tangent and the radius at the point of contact is 90°, thus
∠ OBC = ∠ OAC = 90°
The sum of the interior angles of quadrilateral OACB = 360°, thus
∠ BCA = 360° - (90 + 90 + 110)° = 360° - 290° = 70°
