Show that the triangle (0,0), (6,4), and (4,7) is a right triangle?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola

Math i have no idea how to do a and b