I will get you started.
Let sin x = u
Then 7sin^2x -14sinx+2=-5 become
7u^2 - 14u = - 5
7u^2 - 14u + 5 = 0
Steps:
1. Solve for u.
2. Back- substitute for u.
3. Take the arcsin on both sides to find the angle(s).
You finish.
Luckly i still have my notes and the answer was about 3.1%. I hope this helped.
Angle m is supplementary to the angle that is 125° degrees.
Supplementary angles mean they add up to 180°, which is a straight line.
180-125= 55.
So, angle m is 55°
I hope that helps!
Any number to the power of 0 equals 1.
The number in decimal notation without exponents is 4.48