Question 1127697
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            What I see in the post by @addingup,  is not a correct solution.


            It is even not a  Math  -  it is far away from any  Math standard.


            You can  (actually,  you  MUST)  ignore it  -  it does not deserve any discussion.



For a correct solution see my post under the link


<A HREF=https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1127695.html>https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1127695.html</A>


https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1127695.html