exam Maths Puzzle Numerical Ability

I'm having major problems with this one. Can someone please help?
The question states,

"Find the missing sides and angles"

a= 6 meters
B= 38 degrees
C= 67 degrees

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exam Other Question

this year 75% of the graduating class of harriet tubman high school had taken at least 8 math courses. of the remaining class members, 60? had taken 6 or 7 math courses. what perce 3⁄(5 √(24 ))+2⁄(5 √150)-√96

Add or subtract as indicated.