• #### 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
• #### 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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