plz solve this !!!!!!
Attachments:
Answers
Answered by
1
Step-by-step explanation:
(sinA + secA)^2 + (cosA + cosecA)^2
open the brackets
= sin^2A + sec^2A + 2sinAsecA + cos^2A + cosec^2A + 2cosAcosecA
= sin^2A + cos^2A + sec^2A + cosec^2A + 2sinAsecA + 2cosAcosecA
= 1 + sec^2A + cosec^2A + 2(sinAsecA + cosAcosecA)
= 1 + sec^2A + cosec^2A + 2(sinA/cosA + cosA/sinA)
= 1 + sec^2A + cosec^2A + 2(sin^2A + cos^2A)/sinA.cosA
= 1 + sec^2A.cosec^2A + 2/sinA.cosA
=1 + sec^2A.cosec^2A + 2secA.cosecA
(1 + secA.cosecA)^2
Similar questions