Arctangent

• Hypotenuse: The side opposite the right angle "C", is the hypotenuse "c".
• Opposite Leg: The side opposite to the angle needed "A", is the opposite side "a".
• Adjacent Leg: The side opposite the hypotenuse and next to the angle needed, is the adjacent side "b".

abbreviations

• arctan  -  arctangent

 

Arctangent formula

\(\large{ arctan\; \theta= \frac {opposite}{adjacent} }\)