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In ΔABC , r + r3 + r1 − r2 =
  • a)
    4R cosA
  • b)
    4R cosB
  • c)
    4R cosC
  • d)
    4R
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
In ΔABC , r + r3 + r1 − r2 =a)4R cosAb)4R cosBc)4R cosCd)4...
In mathematics, an equation is a statement that two expressions are equal. It consists of two sides, the left-hand side and the right-hand side, separated by an equal sign (=). The values of variables or unknowns are usually denoted by letters, and the equation represents a relationship between these variables.

Equations can be classified into different types based on their properties. Some common types include:

- Linear Equations: These equations involve only linear terms, where the highest power of the variable is 1. Example: 2x + 3 = 7.

- Quadratic Equations: These equations involve a quadratic term, where the highest power of the variable is 2. Example: x^2 + 3x - 4 = 0.

- Polynomial Equations: These equations involve multiple terms with different powers of the variable. Example: 2x^3 - 5x^2 + 3x - 1 = 0.

- Exponential Equations: These equations involve exponential functions. Example: 2^x = 16.

- Logarithmic Equations: These equations involve logarithmic functions. Example: log(x) = 2.

- Trigonometric Equations: These equations involve trigonometric functions. Example: sin(x) = 0.

Solving an equation means finding the values of the variables that satisfy the equation. This can be done using various techniques, such as algebraic manipulation, factoring, completing the square, or using numerical methods like Newton-Raphson method or bisection method.

Equations are fundamental in mathematics and are used in various fields like physics, engineering, economics, and computer science to model and solve real-world problems.
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In ΔABC , r + r3 + r1 − r2 =a)4R cosAb)4R cosBc)4R cosCd)4RCorrect answer is option 'B'. Can you explain this answer?
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