In this video, you will learn how to perform calculations with the SUM function.

👉 Learn all about sum and difference angle identities. In this video playlist, you will learn how to evaluate, solve, simplify and verify using sum and difference angle identities. We will evaluate using angles not found on the unit...

👉 Learn how to apply induction to prove the sum formula for every term. Proof by induction is a mathematical proof technique. It is usually used to prove that a formula written in terms of n holds true for all natural numbers: 1, 2, 3, ....

👉 Learn how to determine the first five terms of an arithmetic sequence. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. An arithmetic sequence is a...

👉 Learn how to apply induction to prove the sum formula for every term. Proof by induction is a mathematical proof technique. It is usually used to prove that a formula written in terms of n holds true for all natural numbers: 1, 2, 3, ....

👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that...

In this Microsoft Excel tutorial, the teacher explains the different data types in Excel such as labels, whole values, and dates. The tutorial also covers formulas and shortcuts to perform calculations.

👉 Learn how to find the partial sum of an arithmetic series. A series is the sum of the terms of a sequence. An arithmetic series is the sum of the terms of an arithmetic sequence. The formula for the sum of n terms of an arithmetic...

In this Microsoft Excel tutorial, we learn how to access various tools using Alt Keys. These shortcut keys allow us to perform tasks such as adding formulas, activating tabs, applying formatting, deleting columns or rows, and navigating...

Learn how to evaluate the sine of an angle in degrees using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, then we use the unit circle and the...

👉 Learn how to evaluate the cosine of an angle in radians using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, then we use the unit circle and the...

This video tutorial introduces the concept of using the autofill command in Microsoft Excel to copy formulas. It explains the three steps involved in using autofill and demonstrates how to apply it vertically and horizontally.

👉 Learn how to simplify trigonometric function of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the unit circle and Pythagoras theorem to identify and obtain the values of the needed...

Master Evaluating Sine and Cosine using Sum and Difference formulas

Master Solving a trigonometric equation using the sum and difference formulas

An overview of various formulas relating to trigonometric functions.