SOLVING TRIGONOMETRIC EQUATIONS

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Solve for the real number x in the following equations.

Problem 9.4a:         $3\sin ^{2}x-2=0$

Solution

Problem 9.4b:         $4\cot ^{2}x-3=0$

Solution

Problem 9.4c:         $$\frac{3}{5}\cos ^{2}3x-\displaystyle \frac{1}{8}=0$$

Solution

Problem 9.4d:        tan $^{2}\left( 2x\right) +8\tan \left( 2x\right)-9=0$

Solution

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