Question

@Kevin

Answer 1

I don't know.

Answer 2

still same

Answer 3

What grades are you guys in? I am grade 8.

Answer 4

I'm a college student :)

Answer 5

42sqrt - 21sqrt =
Is that how you do this?

Answer 6

\(\color{#0cbb34}{\text{Originally Posted by}}\) @NvidiaIntely
42sqrt(6) - 21sqrt(4) =
Is that how you do this?
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 7

no

Answer 8

How then, sorry.

Answer 9

sin = opponent / hypotenuse
sin 42 = ?

Answer 10

How do I find the hypotenuse number?

Answer 11

Can you give me a medal? :)

Answer 12

hypotenuse = side in front of 90 degree
opponent = side in front of asked angle
Adjacent = side beside of asked angle

Answer 13

hypotenuse = AC
opponent = BC
adjacent = AB

Answer 14

yeah

Answer 15

So now back to the question.
So when you said "sin = opponent / hypotenuse", did you mean sin = \[opponent \div hypotenuse\] or fraction?

Answer 16

The same

Answer 17

ok

Answer 18

Hi Will, pls switch me
I'm gonna go dinner. bye

Answer 19

okay enjoy dinner

Answer 20

so
Sin 42 = opposite/hyp
what is the opposite sides and what is the hypotenuse values

Answer 21

opposite sides are AB and BC.

Answer 22

hypotenuse = 21

Answer 23

BC is right that's the only opposite side

so make the substitution in the expression
Sin 42 = opposite/hyp
to make it as equation

Answer 24

yeah, okay.

Answer 25

we want to find the opposite side (a) so that would be the unknown
and the hyp is known so substitute in the original expression

Answer 26

okay

Answer 27

tag me if you need additional help

Answer 28

@Will.H

Answer 29

pretty quick

Answer 30

lol

Answer 31

Okay so this is the equation that would get answer Sin 42 = opposite/21, right?

Answer 32

so we have
Sin 42 = opposite/hypotenuse

The value of the opposite is a
the value of the hypotenuse is 21
so we have
\[\frac{ Sin 42 }{ 1 } = \frac{ a }{ 21 }\]
Cross multiply

Answer 33

ok

Answer 34

My teacher never taught me about trig formulas.

Answer 35

and yet he gives assessments!?

Answer 36

anyway
Cross multiply!

Answer 37

i'll do it and you can review it and learn from it
\[\frac{ Sin42 }{ 1 } = \frac{ a }{ 21 }\]

Cross multiply
\[a = \sin42 * 21\]
\[a = 14.052\]

Answer 38

I don't want to use trig because I did not learn that yet, so if my teacher sees it she'll know that I am on OpenStudy, and she does not like that :/

Answer 39

right but trig is the only way to solve it!
unless you have 2 sides known in a right triangle you can't do anything but to use trig

Answer 40

Do you know the song Mercy- Shawn Mended?

Answer 41

Send it to your teacher while showing ur work Lol

Answer 42

your teacher know open study :o

Answer 43

pretty sure all USA and Canada known OpenStudy

Answer 44

Owhh....

Answer 45

75% of the homeworks are here lol

Answer 46

my country not at all xD

Answer 47

where you from?

Answer 48

Indonesia

Answer 49

Asian country

Answer 50

Wow
how did you know about OS!

Answer 51

I was searching brainly alternative. After tried one by one, then I found the cool one, that was Open Study

Answer 52

Oh i see
That's nice it is a cool community

Answer 53

Good to see you here.
Anyway we are spamming this question
i hope the answers are sufficient NV
C ya guys

Answer 54

yeah... so cool xD

Answer 55

lol.. ok will

Answer 56

well I never learned trig!
And I am not allowed to use something other than school work to solve problems.
There must be another way to do this Kevin.

Answer 57

Yeah... That's it

Answer 58

What's what?

Answer 59

I don't know the other way without using trigonometry :/
You know, although you're not allowed using trigonometry, you may allowed using pattern formula right?

Answer 60

So what's pattern formula Kevin?

Answer 61

sin 42 = a/21

Answer 62

is that not trig?

Answer 63

Actually it's trigonometry, Idk the other way how to solve this

Answer 64

awwww... :/

Answer 65

@cuanchi @JFraser @Unavailabilityy can you help me?

Answer 66

@jiteshmeghwal9
This one is very difficult. pls help us

Answer 67

He is offline :)

Answer 68

I know :)

Answer 69

@Atsie