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NO LINKS!! URGENT HELP PLEASE!!
Please help me with this solution. ​

NO LINKS!! URGENT HELP PLEASE!! Please help me with this solution. ​-example-1

2 Answers

3 votes

Explanation:

since they give you the question a 24 sin 5x equals to 4 between 0 and 33 give your answer in degrees so your answer is going to be number a cause cuz they say I give your answer in degrees or your number is going to be A

User LuizParreira
by
8.4k points
7 votes

Answer:

b) 18°, 90°, 162°, 234°, 306°


\hrulefill

Explanation:

Given equation:


4 \sin (5x)=4

To find the solutions to the given equation between 0° and 360°, first isolate the sine term and then solve for x.

Isolate the sine term by dividing both sides of the equation by 4:


\begin{aligned}4 \sin (5x)&=4\\\\\sin(5x)&=1\end{aligned}

Solve for 5x by taking the arcsine of both sides of the equation, remembering that the sine function has a periodicity of 2π and is positive in quadrants I and II.


\begin{aligned}\arcsin \left(\sin(5x)\right)&= \arcsin \left(1\right)\\\\5x&=90^(\circ)+360^(\circ)n\end{aligned}

Divide both sides of the equation by 5 to solve for x:


\begin{aligned}(5x)/(5)&=(90^(\circ)+360^(\circ)n)/(5)\\\\x&=18^(\circ)+72^(\circ)n\end{aligned}

To find the solutions for x that are in the given interval 0° < x < 360°, add integer multiples of 72° to the found solution:


x=18^(\circ)


x=18^(\circ)+72^(\circ)=90^(\circ)


x=18^(\circ)+2(72^(\circ))=162^(\circ)


x=18^(\circ)+3(72^(\circ))=234^(\circ)


x=18^(\circ)+3(72^(\circ))=306^(\circ)

Therefore, the solutions in the given interval are:


\large\boxed{x=18^(\circ), 90^(\circ), 162^(\circ), 234^(\circ), 306^(\circ)}

User Rolando
by
8.7k points

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