exam Maths Puzzle Numerical Ability

WHAT IS THE EXACT VALUE OF THE FOLLOWING?

1) SIN 9PI/2

2) COSECANT 7PI

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exam Other Question

A figure shows the graph of g(x) =e^x and a second exponential function f(x). Identify the second function.

Please explain. Thank you in advance if you can help me Translate the following problems into algebraic equations :

1) 42 is 40% of what number?

2) 15 is what percent of 3?

3) The sum of the page numbers on facing pages of a book is 157; what are the page numbers?