∫ cos ( θ ) sin 6 ( θ ) d ( θ ) {\displaystyle \int \cos {(\theta )}\sin ^{6}{(\theta )}d{(\theta )}}
∫ u 6 d u {\displaystyle \int u^{6}du}
u 7 7 = s i n 7 ( θ ) 7 = s i n 7 ( θ ) 7 + C {\displaystyle {\frac {u^{7}}{7}}={\frac {sin^{7}{(\theta )}}{7}}={\frac {sin^{7}{(\theta )}}{7}}+C}
= 1 7 s i n ( θ ) + C {\displaystyle ={\frac {1}{7}}sin{(\theta )}+C}
