The answer is 3. I hope this helps!
They just told me to answer a bunch of questions sorry i dont know this best of luck tho !
11 L : 20 mL
I believe but that was quick mental math
1/2 turns into 2/4 and 2/4 + 1/4 that equals 3/4 and then 11 plus 6 equals 17 3/4
1+tan^2(y)=1/cos^2(y)
cos 2y -1=cos^2(y) -sin^2(y)-cos^2(y) -sin^2(y)
