7cosec-3cot=7 then the value of 7cot+3cosec=? ,..........please say with steps,.,.......,...
sudarsan R , 6 Years ago
Grade 9
10 grade maths> 7cosec-3cot=7 then the value of 7cot+3cos...
1 Answers
Sai Soumya
Last Activity: 6 Years ago
7cosec-3cot=7
7cosec-7=3cot
7(cosec-1)=3cot
7(cosec-1)(cosec+10)=3cot(cosec+1)
7(cosec^2-1)=3cot(cosec+1)
7cot^2=3cot(cosec+1)
7cot=3(cosec+1)=3cosec+3
7cot-3cosec=3
proved
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