Subtraction Formula for Cosine - Noorduyn's Math …...Compound Angles cos(x+ y) = cos x cos y — sin x sin y cos(x — y) = cos x cos y + sin x sin y 1. Express each of the following
Post on 22-Apr-2020
15 Views
Preview:
Transcript
Subtraction Formula for Cosine: Addition Formula for Cosine: Addition a Formula for Sine: Subtraction Formula for Sine:
Ex 1: Find the exact value of sin50°cos20° - cos50°sin20° Ex 2: Calculate sin exactly Ex 3: If the cosa= 2/3, and cos
top related