Answer:
1
Explanation:
tangent of a 45 degree angle is 1
to find tangent, it is the length of the side opposite to an angle divided by the adjacent side
so the tangent of the top angle (which measures 45 degrees) is 1/1 since the adjacent and opposite sides both measure 1, therefore the tangent is 1 bc 1/1=1.
this proves that the tangent of a 45 degree angle is 1