Question

If x= 2sin2 and y= 2cos2 + 1 then find x+y​

Answer 1

Answer:

given :

x= 2sin2

y= 2cos 2+1

Step-by-step explanation:

x+y= 2sin2+2cos 2+1

= 2( sin 2 + cos 2)+1............1

let us assume sin 2 = sinx,cos 2 = x

by identity sin^2 X + cos^2 X =1

( sinx +cosx) ^2 = 1

( sinx +cosx) = √1

from eq -1

= 2( sin 2 + cos 2)+1

= 2( sinx+ cosx)+1

= 2(√1) + 1 (as √1= 1 )

= 2+1

= 3