Question

If x = 3sin2θ, y = 3cos2θ then the value of x + y is ________

Answer 1

Answer:

Given,

x = 3sin²θ

y = 3cos²θ

We know that,

sin²θ + cos²θ = 1

Therefore,

= 3sin²θ + cos²θ

= 1

Answer 2

Answer: 3

Step-by-step explanation: as x=3sin2theta and y=3cos2theta

we substitute ,

x+y=

     = 3sin2theta + 3 cos2theta

     = 3(sin2theta + cos2theta)   - {we know tht sin2theta + cos2theta=1}

     = 3x1 = 3

      therefore the answer is 3