Math Problem Statement
In triangle ABC, m∠BAC = 60° and length of the two sides AB and BC are 8 cm and 10 cm respectively. The area of the triangle ABC, in sq. cm, is
Solution
We are given a triangle with the following information:
- ,
- ,
- .
To find the area of the triangle, we can use the formula for the area of a triangle using two sides and the included angle:
Let's plug in the given values:
We know that , so:
Simplifying:
Thus, the area of triangle is , which is approximately .
Would you like more details or have any questions?
Here are some related questions for further exploration:
- How would the area change if were 90° instead of 60°?
- Can the triangle be classified as scalene, isosceles, or equilateral based on the given information?
- What would be the height of the triangle dropped from vertex onto side ?
- How can you find the length of side using the Law of Cosines?
- What is the perimeter of triangle based on this information?
Tip: The sine rule or cosine rule can be used to solve many problems involving non-right triangles.
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Geometry
Area of a Triangle
Formulas
Area of a triangle = 1/2 * a * b * sin(θ)
Sine of 60° = √3/2
Theorems
Sine Rule
Suitable Grade Level
Grades 9-11
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