HELP ASAP PLZ Given sinx = 2/3 and cos < 0 a) Use double identities to find the exact values of sin2x and cos2x

I got cos2x =1/9 and sin2x =

I'm just confused on how to do b & c.

b) Use a Pythagorean Identity to verify the answers you found for sin2x and cos2x.

c) Use a Ratio Identity to find tan2x. Do not use the double angel identity for tangent.

use a calculator

Step-by-step explanation:

f(x)=2/3x+4/3 is the answer because is whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation:

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: