sin-3-t-9t-2-4cos-2-t-dt-

Question Number 131252 by bramlexs22 last updated on 03/Feb/21

$$\:\int\:\mathrm{sin}\:^{\mathrm{3}} {t}\:\sqrt{\mathrm{9}{t}^{\mathrm{2}} +\mathrm{4cos}\:^{\mathrm{2}} {t}}\:{dt}\:? \\ $$