<span><span>1. </span>sin(-0.523333333333333)+cos(-(157/200))</span><span><span>2. </span>157/300~0.523333333333333</span><span><span>3. </span><span> -0.499770102643102+cos(-(157/200))</span></span><span><span>4. </span>sin(-0.523333333333333)=(-0.499770102643102)</span><span><span>5. </span><span> -0.499770102643102+cos(-0.785)</span></span><span><span>6. </span>157/200=0.785</span><span><span>7. </span><span> -0.499770102643102+0.7073882691672</span></span><span><span>8. </span>cos(-0.785)=0.7073882691672</span><span><span>9. </span>0.207618166524098</span><span><span>10. </span>-0.499770102643102+0.7073882691672=0.207618166524098</span><span><span>11. </span>Окончательный
ответ: 0.207618166524098</span>
216mn^4*(-1/216m^6n^3)= -m^7n^7. Ответ: -m^7n^7.