Question

please answer this question​

Answer 1

By pythagoras theorem, CD^2 = AC^2 + AD^2

13^2 = 12^2 + AD^2

AD^2 = 169 - 144 = 25

AD = 5 m

Sec theta = H/B = CD/ AD = 13/5

Cosec theta = H/P = CD/ AC = 13/12

(sec theta + cosec theta) = 13/5 + 13/12 = 221/60

Option B). 221/60 is correct.