(tanA+secA-1)/(tanA-secA+1)=(1+sinA)/(cosA) View Solution Prove that tanA+secA−1tanA−secA+1=1+sinAcosA. View Solution Prove that : (secA+tanA)(1−sinA)=cosA View Solution Prove that : (sinA−cosA)(cotA+tanA)=secA−cosecA View Solution (cosecA−sinA)(secA−cosA)...
结果1 题目1+sina证明恒等式1+seca+tana1+seca-tana cosa 相关知识点: 试题来源: 解析 1+ 1 +sina 左边一 1 1+ sina cosacosa cosa+1+sina cosa(cosa+1+sina) cosa+1-sina cosa(cosa+1-sina) cos"a+cosa(1+sina) 1-sin a+cosa(1+sina) (cosa+1-sina)· cosa cosa(cosa-sina+1) ((1+...
百度试题 结果1 题目【题目】1.填空题:(1)若√((1-sina)/(1+sina)=tana-seca,则角a的范围是 相关知识点: 试题来源: 解析 【解析】 1.(1) (2kπ+π/2,2kπ+(3π)/2)(k∈Z) ; 反馈 收藏
NCERT Solutions for Class 10 English Medium NCERT Solutions for Class 9 English Medium NCERT Solutions for Class 8 English Medium NCERT Solutions for Class 7 English Medium NCERT Solutions for Class 6 English Medium Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCER...
解：由题意可知：sinB≠0 等式1-sinAsinB=cosB可化为：1-cosB=sinAsinB 又1+cosB=tanAsinB，则有：(1-cosB)(1+cosB)=sinAsinBtanAsinB 即1-cos²B=(sin²Asin²B)/cosA sin²B=(sin²Asin²B)/cosA （*）因为sinB≠0，所以（*）式可化为：sin²...
1+sina/1-sina=（tana+seca)^2 1+sina/1-sina =(1+sina)^2/(1-sina)(1+sina)=(1+sina)^2/cosa^2 ={(1+sina)/cosa}^2 =（tana+seca)^2
结果1 题目1+sina证明恒等式1+seca+tana1+seca-tana cosa 相关知识点: 试题来源: 解析 1+ 1+sina 左边一 cosa cosa 1 sina 1+ cosacosa cosa+1+sina cosa(cosa+1+sina) cosa+1-sina cosa(cosa+1-sina) cos a+cosa(1+sina) 1-sin a+cosa(1+sina) (cosa+1-sina). cosa cosa(cosa-sina+1...
结果1 题目1+sina证明恒等式1+seca+tana1+seca-tana cosa 相关知识点: 试题来源: 解析 1+s sina 左边 1 1+ sina cosa+1+sina cosa(cosa+1+sina) cosa+1-sina cosa(cosa+1-sina) cos a+cosa(1+sina) 1-sin a+cosa(1+sina) (cosa+1-sina). cosa cosa(cosa-sina+1) ((1+sina)(1-sina)...
secA(1−sinA)(secA+tanA)=1. View Solution secA(1−sinA)(secA+tanA)=? View Solution Show that sec A(1-sinA)(secA+tanA)=1. View Solution Prove that:tanA+sinAtanA−sinA=secA+1secA−1 View Solution The value of[(secA+tanA)(1−sinA)]is equal to (a)tan2A(b)sin2A(c)cosA...
注：sin(a/2)）^2表示sin(a/2)的平方这个证明主要运用了(sina)^2+(cosa)^2=1 sin2a=2cosasinacos2a=(cosa)^2-(sina)^2因为1+sina=（sin(a/2)）^2+(cos(a/2))^2+2sin(a/2)cos(a/2)=(sin(a/2)+cos(a/2))^21-sina=（sin...