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# I am finding it hard to prove this question... watch

1. I would really appreciate help with proving this question.

Given that sin (theta + 45) = 2 sin theta, show that

tan theta = 1 / 2 sqrt2 -1

(btw sqrt is square root, i know its obvious but still)
2. (Original post by sparkling stars)
I would really appreciate help with proving this question.

Given that sin (theta + 45) = 2 sin theta, show that

tan theta = 1 / 2 sqrt2 -1

(btw sqrt is square root, i know its obvious but still)
Hello! Check out my method, see if makes any sense. Was a good question!

3. (Original post by RDB1826)
Hello! Check out my method, see if makes any sense. Was a good question!

Thank you very much! The method is perfect - i was getting some of it before but now i understand it!

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Updated: October 20, 2015
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