Question: 1−cos2 x =
A. sin2x
B. -1

Sin^2 x

Step-by-step explanation:

Here, we want to evaluate;

1 - sin^2x

Mathematically ;

sin^2 x + cos^2 x = 1

Thus;

sin^2 x = 1 - cos^2 x

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

step-by-step explanation:

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