Question 1177727
.


This problem was solved to the forum long time ago (4 years ago or even before it).



I solved it then under this link


<A HREF=https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1113952.html>https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1113952.html</A>


https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1113952.html



See the solution there.