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ch4aika [34]
3 years ago
13

Triangle ABC is shown BCD=30 D is a point on side AC such that BD=DA=AB prove that AD =DC

Mathematics
2 answers:
babymother [125]3 years ago
6 0

Answer:

<BAC=<BAD=60° (ΔABD is an equilateral triangle (all sides are equal) so each angle measures 60°)

All the angles in a triangle add to 180, so for ΔABC, we can write <ABC=180-60-30=90. So ΔABC is a right angled triangle with hypotenuse AC.

sinA=opposite/hypotenuse

sin30=AB/AC

1/2=AB/AC

AC=2AB=2AD

AC=AD+DC

AD+DC=2AD

DC=AD

<em>QED</em>

maw [93]3 years ago
5 0

Answer:

Step-by-step explanation:

what grade are you on lemme help you

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The area of that square is 1 cm x 1 cm, which is 1 cm2.

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Darell parks his car in a parking garage. The garage charges a certain amount for the first hour and an hourly rate for each add
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Answer:

charges for the first hour = $7.55

charges for each additional hour = $1.55

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Step-by-step explanation:

Let

x = charges for the first hour

y = charges for each additional hour

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2 years ago
Evaluate the expression when a=4<br> b =−5 and c=−8<br><br> a+b=
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The value of the expression for the given values of a and b is -1

<h3>Evaluating an expression</h3>

From the question, we are to evaluate the given expression for the given values of a, b, and c

The given expression is

a + b

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a = 4,

b = -5,

and

c = -8

To evaluate the given expression for the given values of a and b, we will put the values of a and b into the expression,

That is,

a + b becomes

4 + -5

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Hence, the value of the expression for the given values of a and b is -1

Learn more on Evaluating an expression here: brainly.com/question/17425636

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7 0
1 year ago
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Multiply 2^(-5) by 2^6.  The correct result is 2^1, or just 2 (inches).
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