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anonymous
 one year ago
what are the values of a and b?
anonymous
 one year ago
what are the values of a and b?

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.1use the property of similar triangles  their corresponding sides are in the same ratio

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1the large triangle and the smaller one containing the sides a and b are similar

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1how did you get that?

Directrix
 one year ago
Best ResponseYou've already chosen the best response.0The triangles are similar by the AA Postulate. It appears to me that we are missing a third numerical measure that is needed to solve the problem. @Mikayla_Rose Is the outer, large triangle given to be a right triangle? dw:1444254138067:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1you find the corresponding sides by looking at the equal angles  then use the sides opposite these angles.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0nevermind i think its 8 because that is simplifed form of 32

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1yes @directrix  I have assumed that that !

Directrix
 one year ago
Best ResponseYou've already chosen the best response.0I'd like to see the equation(s) you two are using. I am not seeing it. Yes, if that angle I mentioned is a right angle, the problem can be solved. But, to assume that it is a right angle is incorrect. Of course, the diagrams in these posted problems are frequently incomplete.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1I agree we should not really assume its a right angle but I cant see how we can solve this unless we make that assumption

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I dont know how to get the answer, that is why i posted this question to get instructions.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1can you see why (assuming the big triangle is right angled whay the 2 triangles are similar  similar triangles have all 3 angles equal

Directrix
 one year ago
Best ResponseYou've already chosen the best response.0We can't give instructions when the diagram is incomplete.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok.... How do i complete the diagram?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1it will be complete if the big triangle has been marked as rightangled.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1 as in directrix's drawing.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1do you see what i mean?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444254684623:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444254814673:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444254888518:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay what is the next step?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1triangles ADC and BDC are similar ( by AA postulate) therefore we can write 2 / b = b / (32+2) 2 / b = b / 34 solve for b

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im working on it right now

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0b= 2 sqr root 17, 2 sqr root 17

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1well it has to be the positive value , of course now you can find the value of a by applying the pythagoras theorem to the small triangle.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1a^2 = (2 sqrt17)^2  2^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i got a= sqr root 30?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1Oh  i just realised  angle ADC must be a rightangle because the 2 angles marked are equal and angle C is common.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1No a^2 = 68  4 = 64 a = 8

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh okay i got it thanks a whole lot for helping me!
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