SOLUTION: Ina right triangle, sinB = 2/3, find the cosB

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In a right triangle, sinB = 2/3, find the cosB
In right triangle trigonometry:
If we call the hypotenuse (the longest side of a right triangle): c
The side opposite of an angle: b
The side adjacent to the angle: a
Then sine=b/c
and cosine=a/c
AND
according to the pythagorean theorem:
Our b=2 and c=3, using the pythagorean theorem, we can find a:






Therefore:
Happy Calculating!!!!