Question

If sin



= x/y



then the value of cos



is

Answer 1

Answer:

.Correct option is

B

x=45

0

,y=15

0

sin(x−y)=cos(x+y)=

2

1

,and x,y∈(0,180

∘

)

⇒x+y=60

∘

and x−y=30

∘

thus the solution is,

x=45

∘

and y=15

∘