Q4 of 21 Page 112

If then find sinθ

We know,

cosθ = Adjacent side/Hypotenuse


Adjacent side = 15


Hypotenuse = 17


By Pythagoras Theorem


Hypotenuse2 = Opposite side2 + Adjacent2


Opposite side2 = Hypotenuse2 - Adjacent2


= 172 - 152


= 289 – 225


= 64


Opposite side2 = 64


Opposite side = 8


sinθ = Opposite side /Hypotenuse


= 8/17


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