Arccosine

• 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

• arccos  -  arccosine

 

Arccosine formula

\(\large{  arccos\; \theta = \frac {adjacent}{hypotenuse} }\)