(4) Trigonometric functions

2007-03-02 3:40 am
If the equation 4(cosθ-sinθ)+ksinθ=5 has no solution , find the rage of values of k.
plx show your steps clearly as soon as posible

ans: 1<7

回答 (1)

2007-03-02 6:59 am
✔ 最佳答案
Please find the answers below:

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2007-03-02 10:41:16 補充:
因為 sine 的 value 在 -1 和 十1 之間, 所以要佢 no solution 就要那舊數 (有開方那個) 超出 十1 和 -1 範圍, 即大過 十1 或小於 -1.
參考: My Maths knowledge


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