exam Maths Puzzle Numerical Ability

if sec=5/9, find cos.

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exam Other Question

In the figure elow, we are given the following statements:
(a) m<ACE= 58 degrees
(b) AE is the perpendicular bisector of BC
(c) BF is the bisector of <ABG
(d) GB is perpendicul
You are going to make a box out of cardboard. The box needs to measure 10 cm by 5 cm by 5 cm; 10% of the final product will be wasted in the cutting process. How much cardboard do you need?