plzzz solve question no..1 (iii)
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Step-by-step explanation:
Tana/1-cota + cota/1-tana
=Sina/cosa/1-cota+cosa/sina/1-tana
=Sina/cosa/sina-cosa÷sina+cosa/sina/cosa-sina÷cosa
=Sin^3a-cos^3a/(cosa×sina)(sina- cosa)
=(Sina-cosa)(sin^2a + cos^2a+sina×cosa)/(cosa×sina)(sina-cosa)
=1+sina × cosa/cosa×sina
= Seca× cosec +1
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hope you get the solution
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