What is the general solution for cos(x)=(cos(x))/(csc(x)) ?

The general solution for cos(x)=(cos(x))/(csc(x)) is x= pi/2+2pin,x=(3pi)/2+2pin

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cos(x)=(cos(x))/(csc(x))

cos (x) = \frac{cos ( x )}{csc ( x )}

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

Degrees

x = 9 0^{\circ} + 36 0^{\circ} n, x = 27 0^{\circ} + 36 0^{\circ} n

Solution steps

cos (x) = \frac{cos ( x )}{csc ( x )}

Subtract

\frac{cos ( x )}{csc ( x )}

from both sides

cos (x) - \frac{cos ( x )}{csc ( x )} = 0

Simplify

cos (x) - \frac{cos ( x )}{csc ( x )} : \frac{cos ( x ) csc ( x ) - cos ( x )}{csc ( x )}

cos (x) - \frac{cos ( x )}{csc ( x )}

Convert element to fraction:

cos (x) = \frac{cos ( x ) csc ( x )}{csc ( x )}

= \frac{cos ( x ) csc ( x )}{csc ( x )} - \frac{cos ( x )}{csc ( x )}

Since the denominators are equal, combine the fractions:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{cos ( x ) csc ( x ) - cos ( x )}{csc ( x )}

\frac{cos ( x ) csc ( x ) - cos ( x )}{csc ( x )} = 0

\frac{f ( x )}{g ( x )} = 0 \Rightarrow f (x) = 0

cos (x) csc (x) - cos (x) = 0

Factor

cos (x) csc (x) - cos (x) : cos (x) (csc (x) - 1)

cos (x) csc (x) - cos (x)

Factor out common term

cos (x)

= cos (x) (csc (x) - 1)

cos (x) (csc (x) - 1) = 0

Solving each part separately

cos (x) = 0 or csc (x) - 1 = 0

cos (x) = 0 : x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

cos (x) = 0

General solutions for

cos (x) = 0

cos (x)

periodicity table with

2 πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

csc (x) - 1 = 0 : x = \frac{π}{2} + 2 πn

csc (x) - 1 = 0

Move

1

to the right side

csc (x) - 1 = 0

Add

1

to both sides

csc (x) - 1 + 1 = 0 + 1

Simplify

csc (x) = 1

csc (x) = 1

General solutions for

csc (x) = 1

csc (x)

periodicity table with

2 πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} csc (x) Undefiend 22 \frac{2 3}{3} 1 \frac{2 3}{3} 22 x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} csc (x) Undefiend - 2 - 2 - \frac{2 3}{3} - 1 - \frac{2 3}{3} - 2 - 2

x = \frac{π}{2} + 2 πn

x = \frac{π}{2} + 2 πn

Combine all the solutions

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

cos (θ) = \frac{1}{1 ^{2} + ( 4 ) ^{2} + 8 ^{2}}

2 + 3 cot^{2} (x) - 3 csc (x) = 5

- 2 = - 2 + tan (θ)

cos (A) = 0.65

sin (3 x - \frac{π}{4}) = \frac{2}{2}

What is the general solution for cos(x)=(cos(x))/(csc(x)) ?
The general solution for cos(x)=(cos(x))/(csc(x)) is x= pi/2+2pin,x=(3pi)/2+2pin