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Popular Trigonometry >

14928=(18177)/((1+0.387cos(x)))

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Solution

14928=(1+0.387cos(x))18177​

Solution

x=0.97352…+2πn,x=2π−0.97352…+2πn
+1
Degrees
x=55.77879…∘+360∘n,x=304.22120…∘+360∘n
Solution steps
14928=(1+0.387cos(x))18177​
Switch sides1+0.387cos(x)18177​=14928
Multiply both sides by 1+0.387cos(x)
1+0.387cos(x)18177​=14928
Multiply both sides by 1+0.387cos(x)1+0.387cos(x)18177​(1+0.387cos(x))=14928(1+0.387cos(x))
Simplify18177=14928(1+0.387cos(x))
18177=14928(1+0.387cos(x))
Switch sides14928(1+0.387cos(x))=18177
Divide both sides by 14928
14928(1+0.387cos(x))=18177
Divide both sides by 149281492814928(1+0.387cos(x))​=1492818177​
Simplify1+0.387cos(x)=49766059​
1+0.387cos(x)=49766059​
Move 1to the right side
1+0.387cos(x)=49766059​
Subtract 1 from both sides1+0.387cos(x)−1=49766059​−1
Simplify
1+0.387cos(x)−1=49766059​−1
Simplify 1+0.387cos(x)−1:0.387cos(x)
1+0.387cos(x)−1
Add similar elements: 1−1=0
=0.387cos(x)
Simplify 49766059​−1:49761083​
49766059​−1
Convert element to fraction: 1=49761⋅4976​=−49761⋅4976​+49766059​
Since the denominators are equal, combine the fractions: ca​±cb​=ca±b​=4976−1⋅4976+6059​
−1⋅4976+6059=1083
−1⋅4976+6059
Multiply the numbers: 1⋅4976=4976=−4976+6059
Add/Subtract the numbers: −4976+6059=1083=1083
=49761083​
0.387cos(x)=49761083​
0.387cos(x)=49761083​
0.387cos(x)=49761083​
Divide both sides by 0.387
0.387cos(x)=49761083​
Divide both sides by 0.3870.3870.387cos(x)​=0.38749761083​​
Simplify
0.3870.387cos(x)​=0.38749761083​​
Simplify 0.3870.387cos(x)​:cos(x)
0.3870.387cos(x)​
Cancel the common factor: 0.387=cos(x)
Simplify 0.38749761083​​:0.56238…
0.38749761083​​
Apply the fraction rule: acb​​=c⋅ab​=4976⋅0.3871083​
Multiply the numbers: 4976⋅0.387=1925.712=1925.7121083​
Divide the numbers: 1925.7121083​=0.56238…=0.56238…
cos(x)=0.56238…
cos(x)=0.56238…
cos(x)=0.56238…
Verify Solutions
Find undefined (singularity) points:cos(x)=−3871000​
Take the denominator(s) of 1+0.387cos(x)18177​ and compare to zero
Solve 1+0.387cos(x)=0:cos(x)=−3871000​
1+0.387cos(x)=0
Multiply both sides by 1000
1+0.387cos(x)=0
To eliminate decimal points, multiply by 10 for every digit after the decimal pointThere are 3digits to the right of the decimal point, therefore multiply by 10001⋅1000+0.387cos(x)⋅1000=0⋅1000
Refine1000+387cos(x)=0
1000+387cos(x)=0
Move 1000to the right side
1000+387cos(x)=0
Subtract 1000 from both sides1000+387cos(x)−1000=0−1000
Simplify387cos(x)=−1000
387cos(x)=−1000
Divide both sides by 387
387cos(x)=−1000
Divide both sides by 387387387cos(x)​=387−1000​
Simplifycos(x)=−3871000​
cos(x)=−3871000​
The following points are undefinedcos(x)=−3871000​
Combine undefined points with solutions:
cos(x)=0.56238…
Apply trig inverse properties
cos(x)=0.56238…
General solutions for cos(x)=0.56238…cos(x)=a⇒x=arccos(a)+2πn,x=2π−arccos(a)+2πnx=arccos(0.56238…)+2πn,x=2π−arccos(0.56238…)+2πn
x=arccos(0.56238…)+2πn,x=2π−arccos(0.56238…)+2πn
Show solutions in decimal formx=0.97352…+2πn,x=2π−0.97352…+2πn

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Popular Examples

sec^2(x)-2=0,0<= x<= 2pisec2(x)−2=0,0≤x≤2π1/2 =sin(2θ)21​=sin(2θ)sin(2x)+sin(x)=sin(3x)sin(2x)+sin(x)=sin(3x)sin(2x)=2sqrt(3)sin^2(x)sin(2x)=23​sin2(x)cosh(x)=5cosh(x)=5

Frequently Asked Questions (FAQ)

  • What is the general solution for 14928=(18177)/((1+0.387cos(x))) ?

    The general solution for 14928=(18177)/((1+0.387cos(x))) is x=0.97352…+2pin,x=2pi-0.97352…+2pin
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