👉 Learn how to solve for an unknown variable using parallel lines and transversal theorems. Two lines are said to be ...

👉 Learn how to find the value of an unknown variable in the expressions representing the values of angles given the ...

There are two versions of the cosine rule: Find an unknown side using 𝑎² = 𝑏² + 𝑐² – 2𝑏𝑐 cos𝐴 Find an unknown angle using cos𝐴 = \(\frac{𝑏² + 𝑐² – 𝑎²}{2𝑏𝑐}\) Scientific calculators need to ...

Find an unknown side using \(\frac{𝑎}{sin𝐴} \) = \(\frac{𝑏}{sin𝐵} \) = \(\frac{𝑐}{sin𝐶 } \) Find an unknown angle using \(\frac{sin𝐴}{𝑎 ...