Hi, what do you want to do?
Brian McLogan
Where do the basic trigonometric identities come from
👉 Learn all about the different trigonometric identities and how they can be used to evaluate, verify, simplify and solve trigonometric equations. The identities discussed in this playlist will involve the quotient, reciprocal,...
Let's Tute
Trigonometric Identities
This video tells us how trigonometric identities help us to simplify the huge expressions involving trigonometric ratios.
Curated OER
What's an Identity?
Identity properties are operations to numbers that keep the numbers exactly the same. What? Does this sound confusing? The teacher explains all of the identity properties: 0 is the additive identity, and 1 is the multiplicative identity.
Study Pug
Study Pug: Double Angle Identities
In this lesson, you will learn how to make use of the double-angle identities, a.k.a. double-angle formulas to find the sine and cosine of a double angle. It's hard to simplify complex trigonometric functions without these formulas. [6:23]