Question

what is the value of (1-cosA)/(1+cosA),where A=90°​

Answer 1

Step-by-step explanation:

Considering the high number of Covid-

19 cases, and rapid spread of the illness in

closed environments like classrooms, you

think that the time is not yet ripe to reopen

educational institutions anytime soon. Write

a letter to the editor of The Hindu, Kolkata,

expressing your apprehensions about the

outcome of reopening school now.