This is called the Pythagorean identity. It's one of the most fundamental trigonometric identities and is derived from the Pythagorean theorem applied to the unit circle.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Joseph Soko – 101 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS