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$\displaystyle \frac{-4cos26}{cos154}=\frac{-4cos26}{cos(\pi-26)}= \frac{-4cos26}{-cos26}=4;\\\\\\\frac{23tg59}{tg121}=\frac{23tg59}{tg(\pi -59)}=-\frac{23tg59}{tg59}=-23;\\\\\\\frac{-42sin413}{sin53}= \frac{-42sin(2 \pi +53)}{sin53}= \frac{-42sin53}{sin53}=-42;\\\\\\-22tg14*tg104=-22tg14 *tg( \frac{ \pi}{2}+14)=-22tg14*(-ctg14)=\\=22* \frac{sin14*cos14}{cos14*sin14}=22;\\\\\\16tg54*tg36=16tg( \frac{\pi }{2}-36)*tg36=16ctg36*tg36=16;$

$\displaystyle \frac{-30}{sin^{2}87+sin^{2}177}= \frac{-30}{sin^{2}87+sin^{2}( \frac{\pi}{2}+87)}=\frac{-30}{sin^{2}87+cos^{2}87}=-30;\\\\\\\frac{-24}{cos^{2}127+cos^{2}217}=\frac{-24}{cos^{2}(\frac{\pi }{2}+37)+cos^{2}(\pi +37)}=\\\\=\frac{-24}{sin^{2}37+cos^{2}37}=-24;\\\\\\\frac{4}{sin^{2}57+cos^{2}237}=\frac{4}{sin^{2}57+cos^{2}( \pi +57)}= \frac{4}{sin^{2}57+cos^{2}57}=4; \\ \\ \\ 14sin30*cos120=14* \frac{1}{2}*cos( \frac{ \pi }{2}+30)=7*(-sin30)= \\ =7*(- \frac{1}{2})= -3,5;$