book
Maths Puzzle
Numerical Ability
Simplify (5c-7)(-3)
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book Other Question
If anglesA,B, and C are the sides of a triangle such that sin(A+B)=1/cos(C) and cos(A+B)=cos(C), then show that the triangle is a right triangle
For each expression, either perform the indicated operation or solve the equation, whichever is appropriate.
1. -2/x=3/x+2