Which statement is not correct? A. A 185° angle is an obtuse angle.
B. A 75° angle is an acute angle.
C. The terminal side of a 145º angle is in quadrant II.
D. A 225° angle is a reflex angle.

Solve the system of equations. y= 2x y= x^2 - 15

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.