If cos A= 9\13 find csc A

13 / 44

Step-by-step explanation:

cos A = 9/13

here adjacent = 9 and hypotenuse = 13  opposite = ?

using pythagoras theorem to find opposite

a^2 + b^2 = c^2

9^2 + b^2 = 13^2

81 + b^2 = 169

b^2 = 169 - 81

b^2 = 88

b =

b =  

therefore opposite =  

cosec A = hypotenuse/opposite

= 13/

rationalizing the denominator

=13/  *   /  

=13 * /( )^2

=26 / 4*22

=26 / 88

=13 / 44

   OR

Step-by-step explanation:

Formulas used:

Given :

Find cosec A

Therefore,

OR In a simplified form :

i believe the correct answer is b.

i think the answer is seven, for if i'm being useless °ω°

step-by-step explanation: