exam Maths Puzzle Numerical Ability

Evaluate without a calculator:
A) sin{ Arctan [(-5/13)]}

B)cos{ Arcsin[(-3/4)]}

C)Arccos[(-square root of 3/2)]

D) tan { Arcsin[(-3/4)]}

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exam Other Question

9(2x)=(9 x 2)x
Would this problem be commutative, assosiative, identity or a false statement.
Hi, Can you please help solve these two problems PLEASE!! I lost power in Texas due to the storm and had a hard time coming back. Today is my last day in the class and I need to