Question

what is the value of 2cos²theta (1 + tan ² theta ) ? ( No Spam Answers or I will report )​

Answer 1

Answer:

see image

And plz mark brainliest

Answer 2

Answer:

1

Step-by-step explanation:

The answer is One.

Reason/Explanation-  here, expanding the given equation,

cos2x=2cos^2x-1

we get,

6cos^2x-4cos^2x+2-3=0

2cos^2x-1=0

cos^2x=1/2

cosx=1/(2)^(1/2)

x=45 degrees.

here,

tan^2x=(tan 45)^2=1

Therefore, Answer=1.