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Ex 3.3, 12 (MCQ) - If A = [cos a -sin a sin a cos a], then A + A' = I
![Example 23 - If A = [cos sin -sin cos], prove An - Class 12](https://d77da31580fbc8944c00-52b01ccbcfe56047120eec75d9cb2cbd.ssl.cf6.rackcdn.com/aad32890-8a76-482b-9d0c-8d86e04eaea1/slide74.jpg "Example 23 - If A = [cos sin -sin cos], prove An - Class 12")
Example 23 - If A = [cos sin -sin cos], prove An - Class 12
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Misc 19 - Using the fact that sin (A + B) = sin A cos B - Miscellaneou
![Ex 3.3, 12 (MCQ) - If A = [cos a -sin a sin a cos a], then A + A' = I](https://d77da31580fbc8944c00-52b01ccbcfe56047120eec75d9cb2cbd.ssl.cf6.rackcdn.com/516a294a-c6cd-4b32-b98a-23cd61dd1ebc/slide47.jpg "Ex 3.3, 12 (MCQ) - If A = [cos a -sin a sin a cos a], then A + A' = I")
Ex 3.3, 12 (MCQ) - If A = [cos a -sin a sin a cos a], then A + A' = I
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Formula of cos(a+b) cos(a-b) | Formula of cos(α+β) cos(α-β) - iMath
