\[
3\left(a - \frac{1}{a}\right) + \left(a - \frac{1}{a}\right)^3 = ?
\]
\( a^{2} - \frac{1}{a^{3}} \)
\( a^{3} - \frac{1}{a^{3}} \)
\( a^{3} + \frac{1}{a^{3}} \)
\( a^{2} - \frac{1}{a^{2}} \)
If 1 + sinθ = mcosθ, then what is the value of sinθ?
\(
\frac{2m^{2} - 1}{m^{2} + 1}
\)
\(
\frac{m^{2} - 1}{m^{2} + 1}
\)
\(
\frac{m^{2} + 1}{2m^{2} - 1}
\)
\( \frac{m^{2} + 1}{m^{2} - 1} \)