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11.2/13

Step-by-step explanation:

sin○ = opp/ hyp

son○ = 11.2 /13

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

he has 140 chickens because he has 10 times more chickens than ducks and he has 14 ducks so 14*10=140