Add $a - b + a b, b - c + b c, c - a + a c$

a b + b c + a c

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a b - b c + a c

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a b - b + a c

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a b - b c - a c

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Solution

The correct option is A $a b + b c + a c$
$a - b + a b, b - c + b c, c - a + a c$
Adding we get,
$\Rightarrow$ $a - b + a b + b - c + b c + c - a + a c$

$= a - a - b + b + c - c + a b + b c + a c$
$= a b + b c + a c$

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Question 10

In $Δ A B C$ ,

a) AB + BC > AC
b) AB + BC < AC
c) AB + AC < BC
d) AC + BC < AB

a - b + a b, b - c + b c, c - a + a c

In $Δ$ ABC, right angled at B, expressions for sec C and cosec C is

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