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mir²=dep²+sam²
9=3+sam²
sam²=9-3
sam²=6
sam=√6
cos=sam/mir=√6/3
tan=dep/sam=√3/√6
jadi, x = √2 , y = 1 , sisi miring = √3
cos = x/r = √2/√3 = √6/3
tan = y/x = 1/√2 = √2/2