Translated version
Auxiliary angle method
A method to rewrite $a\sin x+b\cos x$ as a single shifted sine or cosine function. It is helpful to verify by expanding before use.
Original version
Pagalbinis kampas
Būdas $a\sin x+b\cos x$ perrašyti kaip vieną paslinktą sinuso ar kosinuso funkciją. Prieš naudojant pravartu pasitikrinti išskleidus.
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