2 years ago

1)The sum of a number and 81 is at least 102.

Mathematics

1 answer:

Katyanochek1 [597]2 years ago

3 0

Answer:

any number grater than or equal to 21

Step-by-step explanation:

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What is the length of the altitude of the equilateral triangle below?

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The length of the altitude is $3\sqrt{3}$ units

<u>EXPLANATION</u>

The altitude of a triangle is the vertical height of the triangle.

From the diagram the altitude is $a$

Method 1: We can use Pythagoras theorem to find $a$

$6^2=a^2+3^2$

$6^2-3^2=a^2$

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Method 2 Using Trigonometry

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