Hey guys!
Could you explain how to resolve, step by step, the following equations(or at least lines d) and e) )
Thanks in advance!
But where did the first sin(x) go?
It is possible to solve the equation if you factorise it, but then we assume that the first sin(x)=0? Then, sin(x)=0; sin(x)=0 ; cos(x)=2
And can you please confirm the first equation(d). The answer in the book is different.
Thanks in advance!
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