Given that the sine of a certain angle is , and that the angle lies in quadrant 1 of the coordinate plane, what is the tangent of the angle?

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Which graph represents the parent function of y=(x+2)(x-2)