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tidak mungkin sinx + cosx = 3
karena nilai maksimum sinx dan cosx adalah 1,
shg jumlah maksimum sinx + cosx = 2
please, rechek your question or you are typo .....
depan /samping = 1/1
jadi,
depan = 1
samping = 1
miring = 1√2 atau √2
jadi,
sin x = de/mi = 1/√2 = 1/2 √2
cos x = sa/mi = 1/√2 = 1/2 √2