exam Maths Puzzle Numerical Ability

Parallelogram ABCD is divided by a diagonal into two congruent triangles. Angle DCA and BAC have equal measures of 60 degrees and are complementary. Find the measure of :

Angle DCA, DAC, CAB, ABC, BCA, AND BCD

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i really need some help to solve the following problem: y=x^2-9x+3 I tried to do it but kept getting different answers when I graphed it. I need to evaluate 120(0.05)(3.5