if sin a =3/5 then calculate cos a
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AngelKHUSHI1:
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sin a = perpendicular/height
we have h = 5 and p = 3
we find base because cos a = base /height
base = under root 5 square - 3square
using Pythagoras theorm
25 - 9 = 16 ,it is square root of 4
we have 4/ 5 = cos a
we have h = 5 and p = 3
we find base because cos a = base /height
base = under root 5 square - 3square
using Pythagoras theorm
25 - 9 = 16 ,it is square root of 4
we have 4/ 5 = cos a
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