Question

prove sec(90-theta)=cosec theta​

Answer 1

Since 9 is odd multiple of 9, therefore sec changes to cosec and (90-theta) lies in 1st quadrant in which all trigonometric ratios are positive. Thus, sec(90-theta)=cosec theta

Answer 2

Answer:

-cosec theta

Step-by-step explanation:

LHS = RHS

hope this helps you