What is the general solution for (30)/(sin(x))=(50)/(sin(90)) ?

The general solution for (30)/(sin(x))=(50)/(sin(90)) is x=0.64350…+360n,x=180-0.64350…+360n

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Popular >

(30)/(sin(x))=(50)/(sin(90))

Solution

\frac{30}{sin ( x )} = \frac{50}{sin ( 9 0 ^{\circ} )}

Solution

x = 0.64350 \dots + 36 0^{\circ} n, x = 18 0^{\circ} - 0.64350 \dots + 36 0^{\circ} n

Radians

x = 0.64350 \dots + 2 πn, x = π - 0.64350 \dots + 2 πn

Solution steps

\frac{30}{sin ( x )} = \frac{50}{sin ( 9 0 ^{\circ} )}

sin (9 0^{\circ}) = 1

sin (9 0^{\circ})

Use the following trivial identity:

sin (9 0^{\circ}) = 1

sin (9 0^{\circ})

sin (x)

periodicity table with

36 0^{\circ} n

cycle:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= 1

= 1

\frac{30}{sin ( x )} = \frac{50}{1}

Cross multiply

\frac{30}{sin ( x )} = \frac{50}{1}

Apply fraction cross multiply: if

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

then

a \cdot d = b \cdot c

30 \cdot 1 = sin (x) \cdot 50

Simplify

30 \cdot 1 : 30

30 \cdot 1

Multiply the numbers:

30 \cdot 1 = 30

= 30

30 = sin (x) \cdot 50

30 = sin (x) \cdot 50

Switch sides

sin (x) \cdot 50 = 30

Divide both sides by

50

sin (x) \cdot 50 = 30

Divide both sides by

50

\frac{sin ( x ) \cdot 50}{50} = \frac{30}{50}

Simplify

sin (x) = \frac{3}{5}

sin (x) = \frac{3}{5}

Verify Solutions

Find undefined (singularity) points:

sin (x) = 0

Take the denominator(s) of

\frac{30}{sin ( x )}

and compare to zero

sin (x) = 0

The following points are undefined

sin (x) = 0

Combine undefined points with solutions:

sin (x) = \frac{3}{5}

Apply trig inverse properties

sin (x) = \frac{3}{5}

General solutions for

sin (x) = \frac{3}{5}

sin (x) = a \Rightarrow x = arcsin (a) + 36 0^{\circ} n, x = 18 0^{\circ} - arcsin (a) + 36 0^{\circ} n

x = arcsin (\frac{3}{5}) + 36 0^{\circ} n, x = 18 0^{\circ} - arcsin (\frac{3}{5}) + 36 0^{\circ} n

x = arcsin (\frac{3}{5}) + 36 0^{\circ} n, x = 18 0^{\circ} - arcsin (\frac{3}{5}) + 36 0^{\circ} n

Show solutions in decimal form

x = 0.64350 \dots + 36 0^{\circ} n, x = 18 0^{\circ} - 0.64350 \dots + 36 0^{\circ} n

Popular Examples

cos(θ)=(2sqrt(3))/5

cos (θ) = \frac{2 3}{5}

cos(2x)(sin(x)+(sqrt(2))/2)=0

cos (2 x) (sin (x) + \frac{2}{2}) = 0

5sin(θ)=5

5 sin (θ) = 5

2sin(3x)=2,0<= x<= 2pi

2 sin (3 x) = 2, 0 \leq x \leq 2 π

7.9615=59.2153cos(x)-12sin(x)

7.9615 = 59.2153 cos (x) - 12 sin (x)

Frequently Asked Questions (FAQ)

What is the general solution for (30)/(sin(x))=(50)/(sin(90)) ?
The general solution for (30)/(sin(x))=(50)/(sin(90)) is x=0.64350…+360n,x=180-0.64350…+360n