优质解答 原式=2sin30°-(-1)+5×1=1+1+5=7.故答案为:7. 作业帮用户 2016-12-10 举报 ©2020 作业帮 联系方式:service@zuoyebang.com 作业帮协议
角度x=[22 15 9].计算其正弦函数的运算为( )。 A. SIN(deg2rad(x)) B. SIN(x) C. sin(x) D. sin(deg2ra
Q5 Solve the equation4sin2x+8cosx-7=0for0°≤x≤360 Solution Step 1 To solve the trigonometric equation: View the full answer Step 2 Unlock Answer Unlock Previous questionNext question Not the question you’re looking for? Post any question and get expert help quickly....