Question

If x=2sin2 and y=2cos2 +1, then find the value of x+y ​

Answer 1

Answer:

Given, x=2sin  

2

θ,y=2cos  

2

θ+1

To find: (x+y)

x+y=2sin  

2

θ+2cos  

2

θ+1

=2(sin  

2

θ+cos  

2

θ)+1 .....(As sin  

2

θ+cos  

2

θ=1)

=2+1

=3

Step-by-step explanation: