(sinX + cosX) (sinX - cosX) = ? Sertakan Cara!!
Matematika
rizkimaulana721
Pertanyaan
(sinX + cosX) (sinX - cosX) = ?
Sertakan Cara!!
Sertakan Cara!!
1 Jawaban
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1. Jawaban jenersonotniel
(sinX+cosX)(sinX-cosX)
= sinX.sinX - sinXcosX+sinXcosX-cosXcosX
= sin²X - cos²X
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