1.

यदि cos=12/13 तोcosa+cosecaका मान बताओ​

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Answer:

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Step-by-step explanation:

COS = 12/13

cos= B/H

b/h= 12/13

let b be 12k and h be 13k

h²=p²+b²

13²=p²+12²

p²=169-144

p²=25

p=5

cosa+coseca

12k/13k+13k/5k

12/13+13/5

60+169/65

229/65



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