Find the value of :-
 Sec(90-A).sin(90-A)
 

Asked by Kusum and Sanjeet | 9th Jun, 2015, 10:11: PM

Expert Answer:

begin mathsize 14px style S e c left parenthesis 90 minus A right parenthesis. S i n left parenthesis 90 minus A right parenthesis equals C o s e c A. C o s A equals fraction numerator 1 over denominator S i n A end fraction. C o s A equals fraction numerator C o s A over denominator S i n A end fraction equals C o t A end style

Answered by Rashmi Khot | 10th Jun, 2015, 09:12: AM