• #### Integrating Products of Multiple Angle Trigonometric Functions

Integrals of the form or can be evaluated instantly. For example, When the integrand is tow multiple and trigonometric terms multiplied together, we must use a trigonometric identity to express the integrand as the sum of two trigonometric terms using...

https://astarmathsandphysics.com/a-level-maths-notes/c4/3294-integrating-products-of-multiple-angle-trigonometric-functions.html
• #### Integrating Products of Multiple Angle Trigonometric Functions

Integrals of the form or can be evaluated instantly. For example, When the integrand is tow multiple and trigonometric terms multiplied together, we must use a trigonometric identity to express the integrand as the sum of two trigonometric terms using...

https://astarmathsandphysics.com/ib-maths-notes/calculus/925-integrating-products-of-multiple-angle-trigonometric-functions.html
• #### 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
• #### Using the Angle Sum Formulae to Solve Trigonometric Equations

To solve an equation of the form 1. Expand both sides using the angle sum formulae: (1) (2) (3) (4) 2. Divide through by to obtain terms in 3. Transfer the terms in to one side. will now be a common factor. Factorise with 3. Make the subject and both...

https://astarmathsandphysics.com/a-level-maths-notes/c3/3275-using-the-angle-sum-formulae-to-solve-trigonometric-equations.html
• #### Summing a Trigonometric Series

We can sum many trigonometric series using complex number, specicifically the exponential form. $e^{i \theta}= cos \theta +i sin \theta$ (De Moivre's Theorem) The ral part of $e^{i \theta}$ is $cos atheta$ and the imaginary part is $sin \theta$...

https://astarmathsandphysics.com/ib-maths-notes/sequences-and-series/4952-summing-a-trigonometric-series.html
• #### Expressing Functions of the Form Acosx+Bsinx Rcos(x+alpha)

Linear combinations of trigonometric formulae are very important: in fact any continuous function can be expressed as a sum of sin and cosine terms under certain conditions. Any function of the form can be expressed in the form or C can be found simply...

https://astarmathsandphysics.com/a-level-maths-notes/c3/3232-expressing-functions-of-the-form-acosx-bsinx-rcos-x-alpha.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
• #### Periodic Phenomena

Peridic functions are extremely important. Many circular motions are periodic, as are many sums of trigonometric functions. Motion in a circle with constant speed can be written in Cartesian form as where is the radius of rotation and the amplitude of...

https://astarmathsandphysics.com/ib-maths-notes/trigonometry/1127-periodic-phenomena.html
• #### Expressing Functions of the Form Acosx+Bsinx Rcos(x+alpha)

Linear combinations of trigonometric formulae are very important: in fact any continuous function can be expressed as a sum of sin and cosine terms under certain conditions. Any function of the form can be expressed in the form or C can be found simply...

https://astarmathsandphysics.com/ib-maths-notes/trigonometry/1121-expressing-functions-of-the-form-acosx-bsinx-rcos-x-alpha.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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