Question

Max value of 1-2sin^2 theta

Answer 1

Answer:

Correct option is

C

2

4cos

2

θ+1+

2

3

sin2θ

1

⇒

2[1+cos2θ]+1+

2

3

sin2θ

1

Minimum value of 1+4 cos

2

θ+3sinθcosθ

1+

2

4(1+cos2θ)

+

2

3

sin2θ

=1+2+2cos2θ +

2

3

sin2θ

=3+2cos2θ +

2

3

sin2θ

∴=3−

4+

4

9

=3−

2

5

=

2

1

So maximum value of

4cos

2

θ+1+

2

3

sin2θ

1

is 2.

Answer 2

Answer:

2 is the answer

Step-by-step explanation:

hope it's helpful to you