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shahzadjalbani
Group Title
Why is the product of the gradients of 2 straight line perpendicular to each other is always equal to 1 ?? Please prove it......?
 2 years ago
 2 years ago
shahzadjalbani Group Title
Why is the product of the gradients of 2 straight line perpendicular to each other is always equal to 1 ?? Please prove it......?
 2 years ago
 2 years ago

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shirleyx Group TitleBest ResponseYou've already chosen the best response.0
m1=1/m2 you can use two rules (straight line) to prove it. dw:1338626026029:dw
 2 years ago

shahzadjalbani Group TitleBest ResponseYou've already chosen the best response.0
Give me a hint?
 2 years ago

myko Group TitleBest ResponseYou've already chosen the best response.0
you can write equation of the lines perpedicular to each other in this form: ax+by=0 bx+ay=0 this is a hint....:)
 2 years ago

shahzadjalbani Group TitleBest ResponseYou've already chosen the best response.0
Can you prove it through trigonometry?
 2 years ago

shahzadjalbani Group TitleBest ResponseYou've already chosen the best response.0
@myko @shirleyx Can you prove it through trigonometry?
 2 years ago

experimentX Group TitleBest ResponseYou've already chosen the best response.0
slope = \( \tan(\theta) \) another slope = \( \tan(\theta  90) = \cot \theta \)
 2 years ago

myko Group TitleBest ResponseYou've already chosen the best response.0
\[\cos \alpha x+\sin \alpha y =0\] \[\sin \alpha x + \cos \alpha y =0\]
 2 years ago

myko Group TitleBest ResponseYou've already chosen the best response.0
grad f1 = (cosa sinax,sina+cosay) grad f2 = (sinacosax,cosasinay)
 2 years ago
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