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ioda
2 years ago
15

Sin∅=3/5, then cos∅=_____

Mathematics
1 answer:
alexandr1967 [171]2 years ago
7 0

Answer:

4/5.

Step-by-step explanation:

The right triangle with this angle in it has sides 3, 4 and 5.  ( 5^2 = 3^2 + 4^2).

So as sin∅ = 3/5,  the opposite side to angle ∅ is 3 , the hypotenuse is 5 and the adjacent side must be 4 units long.

So cos∅ = adjacent side/hypotenuse = 4/5.

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