1st question please solve it !

Asked by shahbaaz.rocking | 17th Aug, 2020, 05:29: PM

Expert Answer:

begin mathsize 16px style To space prove colon fraction numerator secA thin space minus space 1 over denominator secA space plus space 1 end fraction equals space fraction numerator 1 minus cosA over denominator 1 plus cosA end fraction
straight L. straight H. straight S equals fraction numerator secA thin space minus space 1 over denominator secA space plus space 1 end fraction
space space space space space space space space space space space equals fraction numerator begin display style 1 over cosA end style minus 1 over denominator 1 over cosA plus 1 end fraction
space space space space space space space space space space space space equals space fraction numerator begin display style fraction numerator 1 minus cosA over denominator cosA end fraction end style over denominator begin display style fraction numerator 1 plus cosA over denominator cosA end fraction end style end fraction
space space space space space space space space space space space space space equals fraction numerator 1 minus cosA over denominator 1 plus cosA end fraction equals space straight R. straight H. straight S end style

Answered by Yasmeen Khan | 17th Aug, 2020, 08:12: PM