If sec A=15/7 and A+B=90 degrees, find the value of cosec B

Asked by Sthitaprajna Mishra | 6th Sep, 2014, 09:33: PM

Expert Answer:

G i v e n space t h a t space A space plus space B space equals space 90 degree space rightwards double arrow space A space equals space 90 space minus space B.  N o w comma space s e c space A space equals space 15 over 7 rightwards double arrow s e c left parenthesis 90 space minus space B right parenthesis space equals space 15 over 7 rightwards double arrow space cos e c B space equals space 15 over 7 space space space space space space left square bracket because space s e c left parenthesis 90 space minus space theta right parenthesis space equals space cos e c theta right square bracket

Answered by Mili Hariyani | 7th Sep, 2014, 02:33: PM