>
数学
>
tana=1/2,则sina+cosa/2sina-3cosa得多少
人气:389 ℃ 时间:2020-05-03 10:44:10
解答
tana=1/2=sina/cosa
所以cosa=2sina
带入
原式=sina+2sina/2sina-6sina
=1+2/2-6=3/-4=-3/4
推荐
tana=1/2,则sina+cosa/2sina-3cosa=
若tana=1/2,则(sina+cosa)/(2sina+3cosa)=多少?
若tana=2,则2sina-3cosa分之sina+cosa的值?
若 sinA+cosA / 2sinA-cosA =2 ,则tanA=?
tana=-1/3 sina*sina+2sina*cosa-3cosa*cosa
you shouldn't be late to class again 改错
化简[(ab+1)(ab-1)-2a^2b^2+1]/ab
he asked his daughter what she wanted him to dring for her
猜你喜欢
Circle the wrong
高中数学中关于求值域的问题
1)It is the third time that you____late for school this week(be)
解(x+45)乘85%乘8-8x=(45-35)乘12
地理东经60度和北纬20度在哪个地方
世界上重大的发明与发现有时还面临着受到驱逐和迫害的风险的意思
汽车在平路,上坡路,下坡路的速度分别为30km/h,28km/h,35km/1h.甲,乙两地相距142km,汽车从甲地去乙地需要4.5h,从乙地回甲地需要4.7h,从甲地去乙地.平路、上坡路、下坡路各有多少千米?
丑小鸭的读后感可以加什么小标题
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版