Asked by Yolanda
Let ∠X and ∠Y be complementary. If sin(X) = 3/5 and cos(X) = 4/5 then what is the value of sin(Y)?
A)3/5
B) 4/5
C) 5/4
D) 5/3
Is it A?
A)3/5
B) 4/5
C) 5/4
D) 5/3
Is it A?
Answers
Answered by
Reiny
x+y = 90
y = 90-x
siny = sin(90-x) = cosx = 4/5
the sin( of any angle) = cos(of its complement)
the fact that sinx = 3/5 was a distraction and did not have to be given.
y = 90-x
siny = sin(90-x) = cosx = 4/5
the sin( of any angle) = cos(of its complement)
the fact that sinx = 3/5 was a distraction and did not have to be given.
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