Home Back

Side C of Triangle given Two Sides and Two Angles A and C Calculator

Formula Used:

\[ Sc = \frac{Sb - Sa \times \cos(\angle C)}{\cos(\angle A)} \]

Meter
Meter
Radian
Radian

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Side C of Triangle given Two Sides and Two Angles A and C Formula?

The formula calculates the length of side C of a triangle when given sides A and B, and angles A and C. It uses trigonometric relationships to determine the unknown side length.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Sc = \frac{Sb - Sa \times \cos(\angle C)}{\cos(\angle A)} \]

Where:

Explanation: The formula uses cosine functions to relate the sides and angles of the triangle, allowing calculation of the unknown side C.

3. Importance of Side C Calculation

Details: Calculating unknown side lengths is fundamental in trigonometry and geometry, with applications in navigation, engineering, physics, and computer graphics.

4. Using the Calculator

Tips: Enter all values in appropriate units (meters for sides, radians for angles). Ensure all values are positive and angles are in valid ranges.

5. Frequently Asked Questions (FAQ)

Q1: Why use radians instead of degrees for angles?
A: Trigonometric functions in mathematical calculations typically use radians. Convert degrees to radians by multiplying by π/180.

Q2: What if the result is negative?
A: A negative result may indicate an invalid triangle configuration or measurement errors in the input values.

Q3: Can this formula be used for any triangle?
A: This specific formula applies to triangles where two sides and two angles are known, with the angles being A and C.

Q4: What are the limitations of this formula?
A: The formula assumes valid triangle measurements and may not work for degenerate triangles or when angles approach 90 degrees.

Q5: How accurate is the calculation?
A: Accuracy depends on the precision of input values and the mathematical implementation of cosine functions.

Side C of Triangle given Two Sides and Two Angles A and C Calculator© - All Rights Reserved 2025