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

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

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

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

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

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

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

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