English, asked by subhanasheik0, 3 months ago

Q16. If tan A = 5 /12. find sec²A?​

Answers

Answered by SMonica2406
2

Therefore the required answer is 169/144 ...........

Attachments:
Answered by MrIncredible03
84

\tt{\bold{\underline{Given}}}:

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  • \sf{tan \:A \:= }\sf{5}{12}

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\tt{\bold{\underline{Find}}}:

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  • \sf{sec²\:A}

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\tt{\bold{\underline{Solution}}}:

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⠀ ⟶ \sf\small{(p)²\: =\: (b)²\: + \:(h)²}

⠀ ⟶ \sf\small{(p)²\: =\: (12)²\: +\: (5)²}

⠀ ⟶ \sf\small{(p)² \:=\: 144 \:+\: 25}

⠀ ⟶ \sf\small{(p)²\: =\: 169}

⠀ ⟶ \sf\small{p \:=\: 13}

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\tt{\bold{Now, \:We \:Find \:sec²A\: -:}}

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⠀ ⟶ \sf\small{sec²\:A\: =} \sf\frac{hypotenuse}{base}⠀ ⠀

⠀ ⟶ \sf\small{sec²\:A \:=} \sf\frac{13²}{12}

⠀ ⟶ \sf\frac{13\: ༝\: 13}{14\:༝\:14}

⠀ ⟶ \sf\frac{169}{144}

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