Question

in triangle ABC right angled at C find value of sec(A+B)​

Answer 1

Step-by-step explanation:

Sum of all angles of traingle is 180

a+ b + c = 180

a+b+90 = 180 ....right angled traingle at c means c = 90

a+b = 90

sec (a+b)

sec(90)

sec90 is not defined

this is your answer

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Answer 2

If C=90 then A+B=90 ( angle sum property of triangle)

sec(A+B)=sec90=which is not defined so