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OCR MEI A Level

Small Angle Approximations

OCR MEI H640/02 Nov 2020 A2 Exam Q. 10 :   9 marks in 10:48 min.
OCR MEI H640/03 Jun 2018 A2 Exam Q. 3 :   2 marks in 3:12 min.
Explore small angle approximations
Small Angle Approximations with Radians
For small θ, measured in radians:
$\large { \color{blue}{ \sin \theta } \approx \color{green}{ \theta } }$ $\Large { \color{blue}{ \cos \theta } \approx \color{green}{ 1 - { { { \theta ^ 2 } } \over 2 } } }$ $\large { \color{blue}{ \tan \theta } \approx \color{green}{ \theta } }$

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