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How do you know whether to use sin, cos or tan to find the angle in a triangle?

You have to look at the where the angle is located and what sides of the triangle relative to the angle you are given. The hypotenuse is always the longest line of the triangle, the opposite is always the...

FA
Answered by Feranmi A. Maths tutor
2754 Views

Why is benzene more stable than the theoretical model cyclohexa-1,3,5-triene?

In cyclohexa-1,3,5-triene the molecule has 3 single bonds and 3 double bonds where all the electrons are localised. As a result the energy needed to hydrogenate cyclohexa-1,3,5-triene is (3x -120kJ/mol) =...

AP
Answered by Afia P. Chemistry tutor
20914 Views

Do I need to pre-prepare stories about personal experiences for interviews?

It is helpful to have an idea of a few anecdotes for when you have demonstrated or developed specific attributes desirable in medicine. Situations I was often asked were ones where you have shown teamwork...


Solve the simultaneous equations: 3x + 4y = 5 , 2x - 3y = 9

To solve the equations the first step to take is to eliminate one of the variables x or y so we can get the value of it and then substitute it back in to get the value of the other.
One way to do thi...

YB
Answered by Yunis B. Maths tutor
3628 Views

Explain how a reflex action is coordinated

A reflex action is a way for the body to automatically and rapidly respond to a stimulus. It is able to work so fast because it bypasses the brain. The process is as follows:The stimulus (e.g Pressure, Te...

HE
Answered by Harry E. Biology tutor
3755 Views

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