Problem

Solve the equation in degrees for all exact solutions where appropriate. Round approximate answers in degrees to the nearest tenth
1sin2θ=3sin2θ
Choose the correct solution set below.
A. {7.2+180n,82.8+180n, where n is any integer }
B. {14.5+180n,345.5+180n, where n is any integer }
C. {172.8+180n,345.5+180n, where n is any integer }
D. {7.2+180n,172.8+180n, where n is any integer }
E. {14.5+180n,165.5+180n, where n is any integer }

Answer

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Answer

Final Answer: The solutions to the equation are {7.2+180n,82.8+180n}, where n is any integer.

Steps

Step 1 :Given the trigonometric equation 1sin2θ=3sin2θ.

Step 2 :Rearrange the equation to isolate the trigonometric function, we get 4sin2θ=1.

Step 3 :Divide both sides by 4, we get sin2θ=14.

Step 4 :Use the inverse sine function to find the value of 2θ, we get 2θ=sin1(14).

Step 5 :Solving for θ, we get θ=sin1(14)2.

Step 6 :Converting to degrees, we get two solutions θ=7.2 and θ=82.8.

Step 7 :Since the sine function has a period of 180 degrees, the general solutions are θ=7.2+180n and θ=82.8+180n, where n is any integer.

Step 8 :Final Answer: The solutions to the equation are {7.2+180n,82.8+180n}, where n is any integer.

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