The value of sec(-1485) will be
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sec(-1485) ≈ -1.77761
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360° × 4 = 1440°
Now , 1485° - 1440° = 45°
Because Here it is given - 1485
So , It means the Required angle stands in 4th Quadrant.
In 4th Quadrant, cos & sec are +ve.
Therefore , sec(-1485) = sec(-45) = √2.
Hope It Helps....
Now , 1485° - 1440° = 45°
Because Here it is given - 1485
So , It means the Required angle stands in 4th Quadrant.
In 4th Quadrant, cos & sec are +ve.
Therefore , sec(-1485) = sec(-45) = √2.
Hope It Helps....
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