Question

Evaluate cos2π/3−arctan 1 these are the 8 options answers 1.3√−1/2 2.1−√3/2 3.π+2/4 4.1−π/2 5.−π+2/4 6.π−2/4 7.−3√+2/4 8.−3√+1/2

Answer 1

tan pi/4 =1
so arctan 1 = pi/4
could u find cos 2pi/3 ? or need help with that also ?

Answer 2

yes pls

Answer 3

do you know unit circle ?

Answer 4

just a little

Answer 5

there you will find
cos 2pi/3 = -0.5 = -1/2

Answer 6

so, overall answer u get is
-1/2-pi/4

Answer 7

thx

Answer 8

one more question

Answer 9

giving a circle of radius 2 and center at the point (−1,2)? solve for the equation

Answer 10

ok, the circle with radius r and center x1,y1 is
\[(x-x_1)^2(y-y_1)^2=r^2\]
just plug in values.

Answer 11

thx so much