(A) Complete any two out of three activ...

(A) Complete any two out of three activites :
If `tan theta = 49 /9` , then complete the activity to find the value of `sec theta `
Activity
`sec^(2) theta = 1 + square " "` …(Identify )
` sec^(2) theta = 1 + (40/9)^(2)`
` :. Sec^(2) theta = 1 + square /square `
` :. sec^(2) theta = (81 + 1600 )/81`
` :. sec^(2) theta = square/square `
` :. sec theta = square / square ...` (By taking square roots of both the sides )

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