(sinA-cosA) (sinA+cosA)= ?
plz ans in brief
Answers
Answered by
3
(Sin a - Cos a) ( Sin a + Cos a) =>
Sin^2 a - Cos^a (As we know (a -b) (a+b) = (a^2 - b^2)
so , sin^a - cos^a = 1 (Identity)
hence our Answer is 1
Answered by
2
Answer:
(sinA-cosA) (sinA+cosA)=
Step-by-step explanation:
sin squire A-- cos squire A = 1
is not correct.
because,
sin squire A + cos squire A = 1
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