相关知识点: 试题来源: 解析 8. 常用公式变形 $$ 1 + \sin 2 \alpha = ( \sin \alpha + \cos \alpha ) ^ { 2 } $$ $$ 1 - \sin 2 \alpha = ( \sin \alpha - \cos \alpha ) ^ { 2 } $$ 反馈 收藏
【解析】 答案:$$ | \sin \alpha - \cos \alpha | . $$ $$ \sqrt { 1 - \sin 2 \alpha } = \sqrt { \sin ^ { 2 } \alpha + \cos ^ { 2 } \alpha - 2 \sin \alpha \cos \alpha } = \sqrt { ( \sin \alpha - \cos \alpha ) ^ { 2 } } = | \sin \alpha - \...
2sin(2α) 測驗 Trigonometry sin2α(1−ctg2α) 來自Web 搜索的類似問題 prove that ifsin2α+sin2β+sin2γ=2then the triangle has a right angle https://math.stackexchange.com/questions/793591/prove-that-if-sin2-alpha-sin2-beta-sin2-gamma-2-...
যদি tanbeta=(n sinalpha cosalpha)/(1-n sin^2alpha) হয়, তবে দেখাও যে, tan(alpha-beta)=(1-n)tanalpha।
Let z=1-sinalpha+icosalpha where alphaepsilon(0,pi/2), then the modulus and principle value of the argument of z are respectively
$$(2)商数关系:$$ \tan \alpha = \frac { \sin \alpha } { \cos \alpha } $$.变形:$$ \sin \alpha = \_ ; $$$ \cos \alpha = \_ . $$ 相关知识点: 试题来源: 解析 1.(1))$$ \sin ^ { 2 } $$a+$$ \cos ^ { 2 } $$a $$ \cos ^ { 2 } a $$a ...
试题来源: 解析 8.$$ ( \sin \alpha + \cos \alpha ) ^ { 2 } ( \sin \alpha - \cos \alpha ) ^ { 2 } $$ 结果一 题目 题目 常用公式变形 sin 2a= 1-sin 2a 答案相关推荐 1 题目 常用公式变形 sin 2a= 1-sin 2a 反馈 收藏 ...
Given: $$(1 + \sin\alpha)(1 - \sin\alpha) = \cos^2 \alpha $$ We have to verify the identity. First, we identify the known trigonometry identity...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our ex...
1、用tan(alpha)表示tan(alpha/2)2、化简:sin(50)(1+根号3tan(10))(角度)3、求证:(1-tan^2(alpha/2))/(1+tan^2(alpha/2))=cos(alpha)详细过程,谢谢 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 1tan(alpha)=2tan(alpha)/(1+tan^2(alpha/2))22sin(50)(1/2+...
2sin(2α) 测验 Trigonometry sin2α(1−ctg2α) 来自Web 搜索的类似问题 prove that if sin2α+sin2β+sin2γ=2 then the triangle has a right angle https://math.stackexchange.com/questions/793591/prove-that-if-sin2-alpha-sin2-beta-sin2-gamma-2-then...