exam Maths Puzzle Numerical Ability

Could you please help me solve this question: In a right triangle, the length of the hypothenuse is 5 and the length of the legs is 3, determine the tangents of all three angles. Also find the distance between (1,3) and (5,6).

Thank you, very much.

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exam Other Question

I need a little help with the following:

How many 2-inch square blocks can fit inside a rectaingle that is 10in. high by 20in long?
If the alternate hypothesis states that  does not equal 4,000, what is the rejection region for the hypothesis test?
A) Both tails
B) Lower or left tail
C) Upper or right tail
D) Center
E) None of the above