1.

5. If 0xand secx cosecy, then the value of2sin(x+y) is:(3) 12

Answer» <p>sec x= cosecy1/cosx= 1/sinysiny= cosxsiny= cos(90-x)y= xsiny = cosxy= 90 x= 0y= 30,x= 60y= 45,x= 45so sin(90}= 1</p>


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