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Trigonometric Equation

Directions: Use the numbers 1 – 9, without repetition, to fill in the blanks and make the trigonometric equation below true:



Which radian angles result in sine values that are integers?



There are many possible answers (see image). The denominator must be an even number.
Extension: If the last box must be a 9, how does that change your solutions?

Source: Kevin Rees

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