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Iv) If cos A = 15/ 17 then find sin A.​

Answer»

ANSWER:

Cos A = 15/17= ADJACENT side / Hypotenuse

Adjacent side = 15

Hypotenuse = 17

Opposite side =

\sqrt{hypotenuse ^{2}  -adjacent \: side^{2}  }

=  \sqrt{ {17}^{2} -  {15}^{2}  } \\  =  \sqrt{289 - 225}  \\  =  \sqrt{64}  = 8

Therefore Opposite side = 8

Sin A = Opposite side / Hypotenuse =

8/17

Hope this answer helps you !



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