Question

If 0<=x<=(pi/2) and sin(x) = 3cos(x), what is the value of x?

Answer 1

start with \[\frac{sin(x)}{cos(x)}=3\]so
\[tan(x)=3\]

Answer 2

i imagine you are supposed to use a calculator from there

Answer 3

\[x=\tan^{-1}(3)\]