exam Maths Puzzle Numerical Ability

Find the exact values (in lowest terms) of sin A and cos A using the right triangle in the box and the information: x=36, y=60, z=48

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exam Other Question

Solve the equation: x-3-sqrt of x-1=0
The answer is one of the following: A.x=1,7 B.x=2,5 C.x=5 D.x=7

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If a survey indicates that approximately 90% of all 5th graders absolutely love math, and it is found that 25 students love math, how many studnts are in the class?