Question

Calculate sin0?

Answer 1

triangle wont help here will it?

Answer 2

mmm idk

Answer 3

sin(0) is 0

Answer 4

look at unit circle on the last page of the cheat sheet attached. find 0. first coordinate is cosine, second is sine

Answer 5

you will see that on the unit circle you are right at (1,0) so
\[\cos(0)=1, \sin(0)=0\] should memorize these they are very common

Answer 6

help

Answer 7

what do you need?

Answer 8

oh i don't think he means that to be zero lol

Answer 9

i think he wants
\[\sin(\theta)\]

Answer 10

\[\sin(\theta)=\frac{opposite}{hyp}=\frac{oppsite}{12}\]
so we can find the oppsite side of theta by using the Pythagorean thm
solve this for opp:

\[opp^2+10^2=12^2\]

Answer 11

\[opp^2+100=144 => opp^2=144-100 => opp^2=44 => opp=\sqrt{44}=2\sqrt{11}\]

Answer 12

\[\sin(\theta)=\frac{2 \sqrt{11}}{12}\]

Answer 13

what about the cos oppo

Answer 14

\[\cos(\theta)=\frac{adjacent}{hyp}=\frac{10}{12}=\frac{5}{6}\]

Answer 15

what about tan???