(secx-tanx)(secx+tanx)=1 simplify
2 answers:
Step-by-step explanation:
(secx-tanx)(secx+tanx)
=sec^2-tan^2
=1
Answer:
Step-by-step explanation:
LHS = (sec x - tan x)(Sec x - tan x)
= sec² x - tan²x {(a +b)(a-b) = a² - b²}
Hence proved.
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