Question

In △JKL, solve for x.

Answer 1

17.32

38.16

66.73

74.89

Answer 2

@ganeshie8

Answer 3

@JoannaBlackwelder

Answer 4

@zepdrix

Answer 5

Can you set up the equation?

Answer 6

27/34?

Answer 7

Firstly, that is not an equation. That is an expression. An equation needs an equals sign.

Answer 8

Do you know which trig function you need to use?

Answer 9

not really

Answer 10

34 is the side length opposite from the 27 deg angle and x is the side length adjacent.

Answer 11

What is the trig function that relates opposite and adjacent?

Answer 12

Right-Angled Triangle

Answer 13

This is a right angled triangle, which means that we can use the trig ratios. But it doesn't tell us which one is most useful.

Answer 14

\[\tan \theta=\frac{ opp }{ adj }\]

Answer 15

Remember that one?

Answer 16

yes

Answer 17

Can you plug in the info in the diagram to this formula?

Answer 18

i know is not 66.71

Answer 19

73*

Answer 20

How did you get that?

Answer 21

27/34?

Answer 22

Why did you do that?

Answer 23

for the plug in

Answer 24

im wrong right?

Answer 25

Yeah...

Answer 26

The angle is the 27

Answer 27

34 is the opposite side

Answer 28

x=34/tan27
x=66.73

Answer 29

\[\tan(27)=\frac{ 34 }{ x }\]

Answer 30

got it, it is 66.73

Answer 31

:)

Answer 32

can you help me with this

Answer 33

Given the triangle below, which of the following is a correct statemen

Answer 34

I can try. What are you looking for?

Answer 35

@JoannaBlackwelder

Answer 36

For this one, you need to know the trig ratios.

Answer 37

\[\sec \theta=\frac{ hyp }{ adj }\]

Answer 38

so it would be a or c?

Answer 39

\[\cot \theta=\frac{ adj }{ opp }\]

Answer 40

because of the SEC right?

Answer 41

ok know wht do i do, place the numbers?

Answer 42

Yup, substitute.

Answer 43

cot =3/6

Answer 44

sec =7/3

Answer 45

is it right? @JoannaBlackwelder

Answer 46

That depends on which angles you are looking at.

Answer 47

abc

Answer 48

cot(C)=3/6

Answer 49

then what?

Answer 50

You can simplify the fraction to 1/2

Answer 51

But make sure that you realize that cot(B)=6/3=2

Answer 52

oh now i get it, so it would be D ?

Answer 53

It makes a lot of difference which angle you are using.

Answer 54

:)

Answer 55

yes? yei

Answer 56

Good job :)

Answer 57

can you help me with the last one

Answer 58

k

Answer 59

Use △DEF, shown below, to answer the question that follows:

Answer 60

What is the value of x rounded to the nearest hundredth? Type the numeric answer only in the box below.

Answer 61

Answer for Blank 1:

Answer 62

Can you tell me what the appropriate trig ratio to use is?

Answer 63

a/ sin A = c/sin C

Answer 64

i got the answer 52.47

Answer 65

@JoannaBlackwelder

Answer 66

How did you plug the numbers in?

Answer 67

i followed this instructions

Answer 68

a needs to be across from the angle A and c across from angle C.

Answer 69

I don't think you have the correct configuration to use this formula.

Answer 70

x would need to be across from the 49 degree angle to use this formula.

Answer 71

so it would be like 8 or something like that

Answer 72

Hm, I think it would be longer than that. But let's try to calculate it.

Answer 73

I would use cos.

Answer 74

ok

Answer 75

Can you set it up?

Answer 76

i dont know what i have to do?

Answer 77

\[\cos \theta=\frac{ adj }{ hyp }\]

Answer 78

cos = 55/49

Answer 79

theta is the angle

Answer 80

You can't plug in the angle for the ratio. The ratio is always of side lengths.

Answer 81

\[\cos(49)=\frac{ x }{ 55 }\]

Answer 82

Do you see how I did that?

Answer 83

yea, so know i=how i calculate the answer? to solve for the x?

Answer 84

yup

Answer 85

55*cos(49)=x

Answer 86

2.69?