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3 years ago

What is the area of this triangle ?

Mathematics

2 answers:

lora16 [44]3 years ago

8 0

It’s 6 units ^2 that’s the answer

liq [111]3 years ago

6 0

Answer:

A = 6 units ^2

Step-by-step explanation:

Let the base of the triangle be DE. Its length is 3 units

Let the height of the triangle be from DE to point F. That is 4 units ( -3 to 1 is 4 units)

The area of the triangle is

A = 1/2 bh

=1/2 (3)(4)

A = 6 units ^2

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My grade is a 77%, if i get a 0% on a paper worth 30% of my grade, what will my grade be now??

blsea [12.9K]

$Grade=Paper+Other$
$Grade=(Grade_{paper}\times Value_{paper})+(Grade_{other}\times Value_{other})$
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4 years ago

A tower that is 126 feet tall casts a shadow 148 feet long. Find the angle of elevation of the sun to the nearest degree.

Iteru [2.4K]

Answer:

$\boxed{\theta = 40 \degree}$

Step-by-step explanation:

$\tan( \theta ) = \frac{opp}{adj} = \frac{126}{148} \\ \theta = { \tan}^{ - 1} (0.8513) \\ \theta = 40.4$

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3 years ago

Rectangle ABCD is shown with diagonal AC drawn. Point F is on AC and point E on DC such that FE is perpendicular to DC. Prove tr

777dan777 [17]

Triangle ABC is similar to triangle CEF.

Explanation:

Diagram is inserted for the reference.

ABCD is a rectangle.

ABC is a right angled triangle because all the angles of the rectangle are 90◦ - (a)

CEF is a right angled triangle because FE is perpendicular to DC – (b)

In triangles ABC and CEF,

1. Angle ABC = Angle CEF = 90◦ (Both are right angles from a and b)

2. Angle BCA = Angle EFC (Alternate angles on parallel lines are equal on intersection)

Hence using Similarity property of AA (Angle, Angle), Triangle ABC and CEF are similar.

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3 years ago

I need help fast please

Dmitrij [34]

1060 / 48 = 22.08333

0.0833 = 83/100

22 83/100

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3 years ago

What is the tangent ratio for A) 10/8 B) 8/10 C) 8/6 D) 6/8

Ivanshal [37]

The tangent ratio will depend on what angle you're looking at it for. For angle B the tangent ratio is 8/6. For angle A it's 6/8.

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3 years ago