Tangent Calculating Help

I’ve set my block to tan, and it successfully got a correct answer, however, I tried using atan but don’t know how to use it because it’s the inverse of tan. (I’ve also slightly forgotten if it’s suppose to be a fraction or a whole number lol)

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Is this correct? Here’s a calculator I used:


Please don’t reply without knowing this trigonometry, otherwise it’s just clutter.

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atan takes in a ratio and outputs the theta angle value. Your work seems correct to me.

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