Question

option are
(1)0
(2)1
(3)2/√3
(4)not defined​

Answer 1

Answer:

0 is the right answer

Step-by-step explanation:

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Answer 2

Answer:

Not defined

Step-by-step explanation:

A+B+C=180

A+B=90

$\sec(a + b) = \sec(90)$

$\sec(a + b) =$

undefined

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