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polar coordinates - Find the area of the region inside: $r= 6\sin(\theta)$ but outside of $r

You want the region where $r>1$. That's the same as $\sin\theta > 1/6$. The boundary of that region is where $\sin\theta=1/6$. That happens when $\theta = \arcsin(1/6)$ and when $\theta = \frac\pi 2 - \arcsin(1/6)$....

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就在 Sneakerheads 追逐限量聯名款的同時,好穿、實搭又平價的 Vans Old Skool 卻在這些年成為街頭潮人鞋櫃裡必備的經典國民鞋款,就連「帶貨王」吳亦凡也對這雙鞋絕對情有獨鍾,不論日常穿搭或是重要演出,總是能看到 Kris 吳腳踩 Vans 的身影。不過,如果你對出門一趟卻老是跟...

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