. Find the value of cos 9 degree
Best Answer
The value of cos 9 degree is 0.987
Now using conversion of degree into radian we get,
θ in radians = θ in degrees × (pi/180°)
9 degrees = 9° × (π/180°) rad = π/20 or 0.1570
cos 9° = cos(0.1570) = 0.987
Also check
Inverse Trigonometric Functions
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