Question

IF LA and 2B are
Complementary to end
I other, then the value
od ?+
See 2A + Sin? B
Seca Sec? B is.
199 (blu sillet olm​

Answer 1

Answer:

A + B=90∘B=90∘−Asec2A+sec2B−sec2A.sec2B

=sec2A+sec2(90∘−A)−

sec2A.sec2

(90∘−A)

=sec2A+cosec2A−sec2A.cosec2A=1cos2A+1sin2A−1cos2A×1sin2A=sin2A + cos2Acos2A.sin2A−1cos2A.sin2A=1cos2A.sin2A−1cos2A.sin2A=0