What is the perimeter of an equilateral triangular lamina of side length 12 cm
2 answers:
Answer:
<u>It</u><u> </u><u>is</u><u> </u><u>3</u><u>6</u><u> </u><u>cm</u>
Step-by-step explanation:
In equilateral triangle, all sides are equal.
but side = 12 cm
Answer: Perimeter = 36 cm
Concept:
Here, we need to know how to find the perimeter of an equilateral triangle.
An equilateral triangle is a triangle in which all three sides have the same length.
Perimeter (equilateral triangle) = 3s
s = side length
Solve:
<u>Given information</u>
Side length = 12 cm
<u>Given expression</u>
Perimeter = 3s
<u>Substitute values into the expression</u>
Perimeter = 3 (12)
<u>Simplify by multiplication</u>
Perimeter=
Hope this helps!! :)
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The relationship that sin x° and cos y° share is that; cos x = sin y and sin x = cos y = 12/13
<h3>How to work with Pythagoras Theorem?</h3>
From the definitions of trigonometric ratios, we know that;
sin x = opposite leg/hypotenuse
cos y = adjacent leg/hypotenuse
From the Pythagorean theorem, we can find the hypotenuse as;
6² + 8² = hypotenuse²
The cosine is the sine of the complementary angle. Since x and y are complementary angles as they sum up to 90°, we have cos x = sin y and sin x = cos y = 12/13
Read more about Pythagoras Theorem at; brainly.com/question/27572671
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