(sin a+cos a)2 + (sin a-cos a)2
Matematika
Alesiyaa
Pertanyaan
(sin a+cos a)2 + (sin a-cos a)2
1 Jawaban
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1. Jawaban idznizhahrina
sin^2 a+2 sina cos a+cos^2 a +sin ^2 a -2sina cos a+ cos^2 a
=2