• #### Induction in Trigonometric Proofs

Proving trigonometric identities using induction follows the usual route. The identity usually involves summing a trigonometric series or simplifying a product. 1. Define the identity to be proved so that the statement is equivalent to ' is true'. 2....

https://astarmathsandphysics.com/ib-maths-notes/proofs/1077-induction-in-trigonometric-proofs.html
• #### Symbols and Notation

the set of positive integers and zero the set of integers the set of positive integers is less than is greater than is less than or equal to is greater than or equal to is not equal to the set of rational numbers the set of positive rational numbers...

https://astarmathsandphysics.com/?id=1335:symbols-and-notation&catid=97
• #### Series and Products

Many trigonometric series simplify and add in a very satisfying way. is a geometric sequence with first term and common ratio so we can use the formula for the sum of a geometric sequence to find the sum of the series. As and in general so that so In...

https://astarmathsandphysics.com/ib-maths-notes/trigonometry/1141-series-and-products.html
• #### Symbols and Notation

-the set of positive integers and zero –x is greater than y is greater than –x is less than y x >=y – x is greater than or equal to y -the set of integers, -the set of positive integers, -the set of rational numbers -the set of positive rational...

https://astarmathsandphysics.com/igcse-maths-notes/532-symbols-and-notation.html

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