Convert r^2 sin(2 theta) = 4 to cartesian form.

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.