C because 6-3=3-1/4=2 3/4 so c
Hello :
sin x = 0.5...............(answer : <span>b) 30° )</span>
The second equation is the first equation multiplied by -3. Therefore, The solution to the system of equations is all real numbers.
so,
angle DAB = 25° + 35°
= 60°
now,
angle DAB + angle ADC. = 180°
or, 60° + ADC = 180°
or, ADC = 180° - 60°
Therefore, ADC = 120°
therefore, the angles of the PARALLELOGRAM are 60° and 120°.