Is the triangle with leg lengths of 7mm and 7mm and a hypotenuse of length 10mm a right triangle

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air