If sin21°= x/y , then sec 21°-sin〖69°〗 is equal to August 29, 2017 If sin21°= x/y , then sec 21°-sin〖69°〗 is equal to बाकी देखे
X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work? August 29, 2017 X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work? बाकी देखे