<prompt> Kokotacsc fracpi14 - 4 cos frac2 pi7.  <response>: Tunaweza kuandikaanzaaligncsc fracpi14 - 4 cos frac2 pi7 frac1sin fracpi14 - 4 cos frac2 pi7 frac2 cos fracpi142 cos fracpi14 sin fracpi14 - 4 cos frac 2 pi7.endalignKwa fomula ya pembe mbili,anzaalignfrac2 cos fracpi142 cos fracpi14 sin fracpi14 - 4 cos frac2 pi7 frac2 cos fracpi14sin fracpi7 - 4 cos frac2 pi7 frac4 cos fracpi7 cos fracpi142 cos fracpi7 sin fracpi 7 - 4 cos frac2 pi7 frac4 cos fracpi7 cos fracpi14sin frac2 pi7 - 4 cos frac 2 pi7 frac4 cos fracpi7 cos fracpi14 - 4 sin frac2 pi7 cos frac2 pi 7sin frac2 pi7.endalignKisha kwa bidhaa-jumla na fomula ya pembe mbili,anzaalignfrac4 cos fracpi7 cos fracpi14 - 4 sin frac2 pi7 cos frac2 pi 7sin frac2 pi7 frac2 cos frac3 pi14 cos fracpi14 - 2 dhambi frac4 pi7sin frac2 pi7 frac2 sin frac2 pi7 2 sin frac3 pi7 - 2 sin frac4 pi7sin frac2 pi7 frac2 sin frac2 pi7sin frac2 pi7 2.mwishopanga 