﻿ Using cross multiplication solve 4x-3y=0 2x+3y=18  , 17.10.2019 23:00, Sowdamini

# Using cross multiplication solve 4x-3y=0 2x+3y=18   ### Other questions on the subject: Math Math, 18.08.2019 01:00, suchitrapawan
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If (m)^2 + (m')^2 + 2 mm' cos x = 1, (n)^2 + (n')^2 + 2 nn' cos x = 1, andm'n' + (mn' + m' n) cos x = 0, prove that (i)m^2+n^2=cosec^2x (ii)(m')^2+(n')^2=cosec^2x​
Do you know the correct answer?
Using cross multiplication solve
4x-3y=0
2x+3y=18...

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