Need help finding the missing angle

Mathematics

1 answer:

lys-0071 [83]2 years ago

6 0

Answer:

Step-by-step explanation:

Sinθ = opp/hyp

Sinθ = 12/13

θ = ArcSin (12/13)

θ =67.38

Let x = adj

Tan (67.38) = 15/x

2.4= 15/x

x2.4= 15

x=6.25

Therefore the missing value is 6.25

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Given thatP(5,4) Q(8,10) and R (X,18) are collinear. Find X

aleksley [76]

Answer:

x = 12.

Step-by-step explanation:

If P(5,4),Q(8,10) and R(x,18) are collinear

then the slope of PQ equals the slope of QR

hence:

(10 - 4)/(8 - 5) = (18 - 10)/(x - 8)

6/3= 8/(x - 8)

2 = 8/(x - 8)

multiplying both sides by (x - 8) gives:

2(x - 8) = 8

2x - 16 = 8

2x = 8 + 16 = 24

hence x = 12

8 0

3 years ago

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Which is the perimeter of the triangle below?<br>13/24 foot<br>22/24 foot<br>28/24 foot

tensa zangetsu [6.8K]

Answer:

c. 22/24

Step-by-step explanation:

perimeter = 3/8 + 3/8 + 1/6

perimeter = 22/24 or 11/12

3 0

3 years ago

NEED URGENT HELP!! WILL GIVE BRAINLIEST

Flauer [41]

1. You need to multiply the denominator by something that will make the content of the radical be a square—so that when you take the square root, you get something rational. Easiest and best is to multiply by √6. Of course, you must multiply the numerator by the same thing. Then simplify.

$\displaystyle\frac{2}{\sqrt{6}}=\frac{2}{\sqrt{6}}\cdot\frac{\sqrt{6}}{\sqrt{6}}\\\\=\frac{2\sqrt{6}}{\sqrt{6}\cdot\sqrt{6}}=\frac{2\sqrt{6}}{6}\\\\=\bf{\frac{\sqrt{6}}{3}}$