2sin^2x + 2cos^2x = 4a, then a = ?
a. 4
b. 3
c. 2
d. 1
e. 1/2

  E.  1/2

Step-by-step explanation:

Divide by 2, then make use of the Pythagorean identity for sine and cosine.

  sin(x)^2 +cos(x)^2 = 2a

  1 = 2a . . . . . . . sin²+cos²=1

  1/2 = a

Option E) is correct.

Step-by-step explanation:

Given trignometric equation is

To find the value of "a" from the given equation:

Taking common number "2" outside the equation of left hand side

( We know the trignometric formula   here

 )

Therefore  

It can be written as

Therefore  

Option E) is correct.

the answer is 62

answer: 323 is how many she has ☃☃⛄❄

step-by-step explanation: