How do I able to calculate these angles?

Hello!

Please help me.

Since my English is terrible, I made a sample image.

A is a fixed point. If player clicked somewhere on the screen, that point will become B. So position of B differ each time. I want to know angle A and angle B for correctly place 2 bars (55 pixels and 70 pixels).

How do I able to calculate these 2 angles in the Construct2 way?

I think I learned these trigonometric things long time ago, but I can't remember now...

EDIT: I forgot to mention. I have already tried to use Physics(revolute joint). I think unpredictability of Physics is not suitable for my game(it's a turn-based strategy).

Thanks

Simano

This is an inverse kinematics problem and can be solved with the law of cosines, which you can use to solve for the unknown angles.

I'm not sure but..

Angle A is:

acos(distance(A.X,A.Y,B.X,B.Y)*0.44/55)

Angle B is:

acos(distance(A.X,A.Y,B.X,B.Y)*0.56/70)

I tried these in C2 and they seem working.

Thank you!

I'll re-learn math again. (and English too, someday..)