1.

(ii) Prove that cos? (a - b) + cos2B - 2 cos(a - b) cos a cos B is independent of b​

Answer» <html><body><p><strong><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a>:</strong></p><p>Answer:</p><p>d\huge{\red{\underline{\underline{Answer\implies}}}}Answer⟹</p><p>━━━━━━ ◦ ❖ ◦ ━━━━━━━━━━ ◦ ❖ ◦ ━</p><p></p><p>Carbon compounds birn with <a href="https://interviewquestions.tuteehub.com/tag/clean-918483" style="font-weight:bold;" target="_blank" title="Click to know more about CLEAN">CLEAN</a> <a href="https://interviewquestions.tuteehub.com/tag/flame-992254" style="font-weight:bold;" target="_blank" title="Click to know more about FLAME">FLAME</a>, and no smoke is produced.</p><p></p><p>They also have high calorific <a href="https://interviewquestions.tuteehub.com/tag/value-1442530" style="font-weight:bold;" target="_blank" title="Click to know more about VALUE">VALUE</a>, and maximum ignition temperature can be obtained.</p><p></p><p>Also, their combustion can be restricted.</p><p></p><p>Hence, Carbon compounds are used as fuels.</p><p></p><p>━━━━━━ ◦ ❖ ◦ ━━━━━━━━━━ ◦ ❖ ◦ ━</p><p>\large\mathfrak{\blue{\underline{\underline{❥︎❥︎❥︎HoPe\: iT \: HeLpS\: YoU........ ♡︎♡︎♡︎}}}}❥︎❥︎❥︎HoPeiTHeLpSYoU........♡︎♡︎♡︎</p><p>\fcolorbox{blue}{shsh}{Plz\: like\: the\: answer\: and\: mark\: as \: <a href="https://interviewquestions.tuteehub.com/tag/brainliest-1995348" style="font-weight:bold;" target="_blank" title="Click to know more about BRAINLIEST">BRAINLIEST</a>}Plzliketheanswerandmarkas Brainliest</p></body></html>


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