Question

Please help I will give Medal... Evaluate each of the following:
sin^120° + cos^2 120°

Answer 1

\[\sin^2120 + \cos^2120\]

Answer 2

is dat ur question

Answer 3

Yes

Answer 4

Rule:

\[\Large \sin^2(x) + \cos^2(x) = 1\]

is a true equation for any real number x value. This is known as an identity. Specifically the pythagorean identity

http://www.regentsprep.org/regents/math/algtrig/att9/pythagoreanid.htm

Answer 5

d answer is 1

Answer 6

Really I Did it like this but I didnt know how to contrinue

I did like this( √3/2)^2 + (- 1/2)^2=

3/2 + 1/4

Answer 7

( √3/2)^2 will turn into 3/4

you square both the √3 and the 2 down below

Answer 8

3/4 + 1/4 = 4/4 = 1

Answer 9

Ok get it :) thanks @jim_thompson5910

Answer 10

you're welcome

Answer 11

Can u help me with another one really similar?

Answer 12

@jim_thompson5910

Answer 13

sure