Side A of Triangle Calculator

Formula

The formula to calculate Side A (Sa) of a Triangle is:

\[ Sa = \sqrt{Sb^2 + Sc^2 - 2 \cdot Sb \cdot Sc \cdot \cos(\angle A)} \]

Where:

Let's assume the following values:

Using the formula:

\[ Sa = \sqrt{14^2 + 20^2 - 2 \cdot 14 \cdot 20 \cdot \cos(0.5235987755982)} \]

Evaluating:

\[ Sa = 10.54 \text{ meters} \]

Side A is 10.54 meters.

Side B	Side C	Angle A (radians)	Side A
13	19	0.50	9.82
13	19	0.51	9.94
13	19	0.52	10.06
13	19	0.53	10.19
13	19	0.54	10.31
13	19	0.55	10.43
13	20	0.50	10.61
13	20	0.51	10.73
13	20	0.52	10.85
13	20	0.53	10.97
13	20	0.54	11.09
13	20	0.55	11.21
13	21	0.50	11.44
13	21	0.51	11.55
13	21	0.52	11.67
13	21	0.53	11.79
13	21	0.54	11.90
13	21	0.55	12.02
14	19	0.50	9.49
14	19	0.51	9.63
14	19	0.52	9.76
14	19	0.53	9.90
14	19	0.54	10.03
14	19	0.55	10.17
14	20	0.50	10.23
14	20	0.51	10.36
14	20	0.52	10.49
14	20	0.53	10.62
14	20	0.54	10.76
14	20	0.55	10.89
14	21	0.50	11.00
14	21	0.51	11.13
14	21	0.52	11.26
14	21	0.53	11.39
14	21	0.54	11.52
14	21	0.55	11.65
15	19	0.50	9.26
15	19	0.51	9.41
15	19	0.52	9.56
15	19	0.53	9.71
15	19	0.54	9.85
15	19	0.55	10.00
15	20	0.50	9.92
15	20	0.51	10.07
15	20	0.52	10.21
15	20	0.53	10.36
15	20	0.54	10.51
15	20	0.55	10.65
15	21	0.50	10.64
15	21	0.51	10.78
15	21	0.52	10.92
15	21	0.53	11.06
15	21	0.54	11.21
15	21	0.55	11.35