If the sin 60=√3/2, then which statement is true?
a. cos 30=√3/2, bc the cos and sin are complements
b. cos 120= √3/2 bc the cos and sin are supplements
c. cos 30=0 bc the cos and sin are complements
d. cos 120= 0 bc the cos and sin are supplements

Option A

Step-by-step explanation:

Sin 60 = is the statement given in this question.

We know from the trigonometric identities.

Sin x = cos ( 90-x )

In other words Sin and Cos are complementary.

Therefore, Sin 60 = Cos ( 90 - 30 )

                              = Cos (30)

                             =

Therefore, option A is the answer

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

it would be 4 over -2 divided by -1 over 3.

if you want a solution it would be 4

you flip it so it would be 4/-2 divided by 3/-1 then it would be 12/3 and you would simplify it to 4