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Expand 4ab3 (a2b2-a-1)
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∙ 14y ago
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Is c2a2 b2 a pythagoreans theorem?
yes c2=a2+b2
A plus b plus c whole square?
(a+b+c) 2=a2+ab+ac+ba+b2+bc+ca+cb+c2a2+b2+c2+2ab+2bc+2ca [ ANSWER!]
Do math has to do with art and why?
its easy just by using an equation: r + y = o e other way round ,so red + yellow = orangethe harder way is r - o = y and the other way round !the same is a2 + b2 = c2a2 - c2 = b2and other way round! this is another rule of the rules of Pythagoras
What is sin pi over 4?
What does sin(pi/4) = ?Let's consider a special right triangle: the 45-45-90 triangle.In any 45-45-90 triangle, since the two 45 degree angles are congruent, the sides opposite to those angles are both congruent.Now, considering the unit circle, the radius of the circle must be one.So, if you put in a 45-45-90 triangle in a unit circle, this allows you to find the value of sin pi/4 because pi/4 radians = 45 degrees.Because the circle has radius 1, the hypotenuse of the triangle must also be one. Since the other two sides must be equal, you can solve for them using the Pythagorean theorem.a2 + b2 = c2a2 + a2 = 122a2 = 1a2 = 1/2a = √(1/2)a = 1/√(2) * (√(2)/√(2))a = √(2) / 2Since sin is defined as opp/hyp, sin 45 degrees (pi/4 radians) = (√(2)/2)/1 = √(2)/2I hope this helped explain my answer. If there's anything that's still confusing, just tell me. (Sorry I didn't do it the first time).
