There are 6 people at a party. if every person has to shake everyone's hand exactly once, how many handshakes is there all together?

There are 36 handshakes all together.
I hope this helps you.
Have a great day!

A B C D E
B C D E F
C D E F
D E F
E F
F

Idk i got 20. Because if there are 6 people (i labeled them A B C D E and F) and then you match them up like this, you get 20

Just a question- could you organize the data better? i just cannot tell which number are for which bakery. i will be happy to answer this question if you could do this for me! : )

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.