Buktikan! (1-sin*y)*+(1-cos*y)* = 1-2sin*y.cos*y * = kuadrat
Matematika
Ifat12
Pertanyaan
Buktikan!
(1-sin*y)*+(1-cos*y)* = 1-2sin*y.cos*y
* = kuadrat
(1-sin*y)*+(1-cos*y)* = 1-2sin*y.cos*y
* = kuadrat
1 Jawaban
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1. Jawaban EdiHeaven
(1-sin²y)² + (1-cos²y)²
(1-2sin²y+sin⁴y) +(1-2cos²y+cos⁴y)
2-(sin²y+cos²y) + sin⁴y+cos⁴y
2-1+sin⁴y+cos⁴y
1+sin⁴y+cos⁴y