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Q9: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7044/.jpg" alt=" A)
Q46: One rope pulls a barge directly east
Q48: The formula <span class="ql-formula" data-value="\sin
Q111: <span class="ql-formula" data-value="\cos \left( \frac { 5
Q166: <span class="ql-formula" data-value="y=-4 \sin (2 \pi x-3)"><span
Q176: <span class="ql-formula" data-value="\frac { 2 \tan \frac
Q177: <span class="ql-formula" data-value="120 ^ { \circ }"><span
Q252: <span class="ql-formula" data-value="\mathbf { v } =
Q355: <span class="ql-formula" data-value="y=3 \cos x"><span class="katex"><span class="katex-mathml"><math
Q363: <span class="ql-formula" data-value="y=\csc \left(2 x-\frac{\pi}{4}\right)+2"><span class="katex"><span class="katex-mathml"><math