Practice Questions on Sin (a – b)

Q1: Determine sin (45°-30°)

Q2: Calculate sin (5π/3 – π/4)

Q3: Find sin (120°- 60°)

Q4: Compute sin (45°) using Sin (a – b) Formula.

Sin A minus B

Sin A Minus B or sin (A – B) is one of the many common compound identities. It is used in to find the sin of difference of any two angles as difference of product of sine and cosine of individual angles. In this article, we will discuss this formula in detail, including proof and solved examples.

Table of Content

  • What is Sin(a-b)?
  • Proof of Sin(a – b) Formula
  • How to Apply Sin(a – b)?
  • Some Other Similar Identities
  • FAQs

Similar Reads

What is Sin(a-b)?

The sine of the difference of two angles a and b, denoted as sin (a − b). It is a compound angle formula where we want to denote the sine value of the difference between two angles. Sin (a-b) is also called the difference formula. Sin a minus b is equal to the product of sin a and cos b minus the product of cos a and sin b....

Proof of Sin(a – b) Formula

To prove: sin (a – b) = sin a cos b – cos a sin b...

How to Apply Sin(a – b)?

If we want to apply the sin(a-b) formula we must follow up these steps:...

Some Other Similar Identities

Some other similar identities includes:...

Examples Using Sin(a – b) Formula

Example 1: Find the value of Sin 15°....

Practice Questions on Sin (a – b)

Q1: Determine sin (45°-30°)...

FAQs on Sin A minus B Formula

What is the formula for sin (A – B) ?...