Solve for 0 =< x =< 360 16/(cos(x+25)+1) = 10, give answers to 2 d.p.
Rearrange to get cos(x+25) = 0.6
Use inverse cosine to get (x+25) = -53.13... 53.13... 306.86... 413.13...
Isolate x to get x = -78.13... 28.13... 281.86... 388.13...
Apply the limits and round the answers to get x = 28.13 and 281.87
BW
Related Maths A Level answers
All answers ▸Solve, correct to 2 decimal places, the equation cot(2x)=3 for 0°<x<180°
Simplify: 4log2 (3) + 2log2(5)
AS Maths ->Expresss x^2 + 3x + 2 in the form (x+p)^2 + q... where p and q are rational number
The function f is defined by f(x)= 2/(x-3) + x - 6 . Determine the coordinates of the points where the graph of f intersects the coordinate axes.