Mathematics
SMA

請問第二題要如何計算呢
麻煩幫我解釋一下,快要段考了呢 !🤧

(34 82go 12.cos2° + cos4" + Cos6° + + C08360°的值為(1)-2 (2) -1 30 (451 (5)2 270 13 (1)tanº (2)cos90° (3)sinº (4)tan270° (g/cos540°. 300 X X (4)下列何者無意義? con180 18
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