On what date and time was the lowest tide? Thursday, Feb. 7, at 2:29 p. m.
Friday, Feb. 7, at 9:21 p. m.
Friday, Feb. 8, at 2:24 a. m.
Friday, Feb. 8, at 3:16 p. m.

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.