SOLVING TRIGONOMETRIC EQUATIONS

Note: If you would like a review of trigonometry, click on trigonometry.

If you would like to see the answers and the solutions, click on solution.

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

Solution

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

Solution

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Author: Nancy Marcus