Maths(M2)急急急問問題!10分!!!
1.proving:
(tanθ-cosecθ)²-2cosecθ=(cotθ-secθ)²-2secθ
2.find the value of cotθ if
cotθ+ cosecθ=1/4
3.if cot²θ+3cosec²θ=7,show that tan²θ=1.
4.If asinθ+bcosθ=p and bsinθ-acosθ=q,show that a²+b²=p²+q².
收錄日期: 2021-04-21 22:11:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100423000051KK01725