sin x = 0.8
tg x = sin x/ cos x sachant que cos²x+ sin²x = 1
cos²x = 1- sin²x cos²x = 0.36 cos x = 0.6
tg x = 0.8/0.6 = 1.33
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sin x = 0.8
tg x = sin x/ cos x sachant que cos²x+ sin²x = 1
cos²x = 1- sin²x cos²x = 0.36 cos x = 0.6
tg x = 0.8/0.6 = 1.33