exam Maths Puzzle Numerical Ability

Evaluate without a calculator
1. sec(210 degrees)

2. tan(-pi/4)

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exam Other Question

A garden area is 30 ft long and 20 ft wide. A path of uniform width
is set around the edge. If the remaining garden area is 400 ft2, what is the width of
the path? If the speed of light is 3.00 x 10^8 m/sec, how long does it take to travel 2.29 x 10^11?