Mar 6, 2025 · When can you use Sine rule? If you look at the fractions for Sine rule, you will only need 2 of the fractions the a/sin A and b/sin B. There are 4 unknowns in those 2 fractions. 2 …

The Law of Sines (or Sine Rule) is very useful for solving triangles: a sin A = b sin B = c sin C. It works for any triangle:

Feb 6, 2024 · Calculate angles or sides of triangles with the Law of Sines. Calculator shows law of sine equations and work. Calculates triangle perimeter, semi-perimeter, area, radius of …

Find out how the Law of Sines can be used to calculate unknown sides and angles of any oblique triangle. Discussion of different cases are included.

What is the angle with the ground? Answer: sin θ = O/H (Draw a diagram and write the rule. Then substitute the numbers and letters specific to this question. See the next line of working.) sin θ …

The Sine Rule We use the sine rule for non −right angled triangles. We denote the angles by capital letters A, B, C We denote the sides opposite each angle by the lower case letters a, b, …

North line. (b) Calculate the distance of Y from X, giving your answer to 3 significant figures. (c) (i) On your diagram, mark the angle that shows the bearing of X from Y. (ii) Calculate the bearing …

If you want to calculate an angle’s size, you need to use the sine rule version, where the angles are the numerators. Sine (A)/a = Sine (B)/b = Sine (C)/c. As before, you will only need two …

Derivation of the Sine and Cosine Rules. Consider a triangle ABC. By creating a perpendicular line from the base \(a\) to the tip of the triangle, two right-angle triangles are formed. It can be …

When using the sine rule to calculate an angle it is important to know whether the angle required is acute or obtuse. In this question we are required to find an angle that is obtuse: We set up …