故正确答案为 rules。2. 结合文意,在一些学校,学生们上学时必须(have to)穿校服。have to 是固定搭配,意为“不得不,必须”。故正确答案为 have。3. 结合文意,学生们不喜欢校服,认为校服是世界上最丑的衣服(clothes)。clothes 意为“衣服”,符合文意。故正确答案为 clothes。4. 结合文意,但是学校不允...
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Ask a question Our experts can answer your tough homework and study questions. Ask a question Search AnswersLearn more about this topic: Derivatives of Trigonometric Functions | Rules, Graphs & Examples from Chapter 8 / Lesson 3 27K Explore several different examples of trigonometric functions...
Find each exact value if x between 0 and \frac{\pi}{2} and y between 0 and \frac{\pi}{2}: \cos (x + y) if \sin x = \frac{5}{13} and \sin y = \frac{4}{5}. Find the exact value of each expression. (a) sin (3 pi / 4 + 5 pi / 6). (b) sin 3 pi / 4 ...
Questions to be Solved - 1. Evaluate the value of Sin 90⁰ + Cos 90⁰. Sol. As we know that the value of Sin 90⁰ = 1 And the value of Cos 90⁰ = 0 Substituting the values of Sin 90⁰ and Cos 90⁰ , Therefore, Sin 90⁰ + Cos 90⁰ = 1 + 0 = 1 2. What...
We also know from trigonometry that cos(60)2+ sin(60)2= 1. Therefore, after substitution and calculation we get Sin(60) = √(0.5) = 0.707 approx. 3. What are the more important trigonometric identities? In fact all the trigonometric identities are important but few are more important tha...
sin(x1)+x1cos(x1) 來自Web 搜索的類似問題 What rules were used to find thatsin(2/x)−(2/x)cos(2/x)is the derivative ofy=xsin(1/x)? https://math.stackexchange.com/q/1190700 You ca...
Welcome to Manor Farm U-pick Activitiescosθsinmsinθ C:We are known for our delicious strawberries.We invite you to visit our farm and enjoy our fresh products and great farming experiences.Please read the instructions below. C:To pick the strawberries,you need to make a reservation(预约)on...
Answer and Explanation:1 Here the given limit islimx→1sin(1−cosx)x. Then we have {eq}\displaystyle x... Learn more about this topic: Limit of a Function | Definition, Rules & Examples from Chapter 6/ Lesson 4
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