melodysprecherpelctt
Answered

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Problem Solving
Find all of the solutions for the following equation.
tan theta= 4 tan theta - square 3

Problem Solving Find All Of The Solutions For The Following Equation Tan Theta 4 Tan Theta Square 3 class=

Sagot :

Answer:

A) [tex]\theta=30^\circ+180n^\circ[/tex]

Step-by-step explanation:

[tex]tan\theta=4tan\theta-\sqrt{3}\\\\-3tan\theta=-\sqrt{3}\\\\9tan^2\theta=3\\\\tan^2\theta=\frac{3}{9}\\ \\tan^2\theta=\frac{1}{3}\\ \\\frac{1-cos(2\theta)}{1+cos(2\theta)}=\frac{1}{3}\\ \\ 3-3cos(2\theta)=1+cos(2\theta)\\\\2-3cos(2\theta)=cos(2\theta)\\\\2=4cos(2\theta)\\\\\frac{2}{4}=cos(2\theta)\\ \\\frac{1}{2}=cos(2\theta)\\ \\2\theta=60^\circ+360n^\circ\\\\\theta=30^\circ+180n^\circ[/tex]

Recall the identity [tex]tan^2(\theta)=\frac{1-cos(2\theta)}{1+cos(2\theta)}[/tex]

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