What is the total area of the triangle with sides of 19 meters and 22 13 meters and 24 55 meters?

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Summary. Extended information: Cosine theorem, Euclidean fundamental theorem of plane geometry.

The cosine theorem is a mathematical theorem describing the relationship between the length of three sides in a triangle and the cosine value of an angle, and is a generalization of the Pythagorean theorem in the case of a general triangle, and the Pythagorean theorem is a special case of the cosine theorem. The cosine theorem is an important theorem to reveal the relationship between the corners of triangles, and it can be used directly to solve a class of problems that can be used to find the third side of a known triangle on both sides and angles or to find the triangle on three sides.

Meters on one side, meters on one side, 24 meters on one side, find the area of the triangle.

Find the area, how many acres.

Kiss is happy to solve the problem for you: the area of the triangle is: the square of Chunzhou rice is equal to: acres.

How it's calculated.

Kiss: The solution process is as follows: According to the cosine formula, you can know:

a2=b2+c2—2abcosaSo:cosa=And because:sin2a+cos2a=1so:

sina = also because: triangle materialistic height area = 1 2bcsina = 1 2 24 square meters and because the ruler: 1 mu = square meters, so:

Acres. Analysis: This question examines the comprehensive application of triangles and trigonometric functions, and knows that the cosine value is found on the side, and the sine value is calculated according to the cosine value, and then the area can be found.

Extended information: Cosine theorem, Euclidean fundamental theorem of plane geometry. The cosine theorem is a mathematical theorem describing the relationship between the length of three sides in a triangle and the cosine value of an angle, and is a generalization of the Pythagorean theorem in the case of a general triangle, and the Pythagorean theorem is a special case of the cosine theorem.

The remainder string theorem is an important theorem to reveal the relationship between the corners of triangles, and it can be used directly to solve a class of problems of finding the third side of the two sides and angles of a known triangle or finding the triangle of the three sides of the known triangle. Dust culture.

The three sides of the triangle are 21 meters, 20 meters, meters, and what is the area.

Hello dear, I am Teacher Zhang, who has 10 years of teaching experience, a general knowledge in the field of education, and I hope to help you through my experience and knowledge. The solution to this problem is: Solution:

The three sides of the triangle are: a, b, c, and a=21, b=20, c=94; The corresponding angles are: a, b, c then cosa = (b 2 + c 2-a 2) (2bc) = again (sina ) 2 + (cosa) 2 = 1 sina = my finish, I don't know if you still have any questions.

To solve the area of the triangle, we need to figure out the relationship between the three sides.

Trigonometric functions are used to refer to the size of the hailstone's solution area.

Summary. Hello, the know-it-all for you to find: side length meter side length meter side length meter, this, the area is calculated as:

The area of a triangle is the plane area of a triangle that is measured and calculated. It is calculated as half of the product of the base and height of the triangle, denoted as s=1 2(ah).

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How to calculate the area of a triangle: find the area of the side length meter side length meter side length meter.

Hello, I have seen your reputation pretend to ask the content of the consultation, Know-it-all is looking for the answer, please give me 3 minutes, thank you for your support! (Pepsi Qing Qizao is a special Q&A expert).

Hello, Know-it-all for you to inquire: the side of the nuclear talk director of the meter side of the long meter to let the side of the long meter, this Shizhou, the area is calculated as: , the triangle area refers to the plane area of a triangle through measurement and calculation.

The calculation formula is one and a half large accompaniment to the base of the triangle and the high product, denoted as s=1 2(ah).

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That's the answer you're looking for

It should be like this. The above is my consultation on this consultation, if there is anything unclear about the rent, you can communicate again, I hope the draft will be helpful to you