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- What mathematical idea is used to derive the auxiliary angle formula?
What mathematical idea is used to derive the auxiliary angle formula?
The derivation of auxiliary angle formula is also the sum angle formula and difference angle formula of sine and cosine.
The simplest one is sinx+cosx.
=√2(cosπ/4 sinx + sinπ/4 cosx)
= √2sin(x + π/4)
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