Hot Student Stories
top-5-grammar-and-spelling-checkers-to-rock-in-2019

What is the length of line segment LJ? 9 units 12 units 15 units 18 units

Ralph Lopez

in Mathematics

follow
followin
1 answer
430 views

1 answer


Roger Moore on February 24, 2018

The image in the attached document figurewe know thatin the right triangle MKJapplying Pythagoras TheoremKJ2=MI2+MJ2--------> KJ2=62+32-----> KJ2=36+9KJ=√45find cos ∠Jcos ∠ J=3/√45------> equation 1∠J+∠ L=90°------> for additional anglessocos ∠ J=sin ∠ Lin the right triangle LKJsin ∠ L=√45/LJ------> equation 2equate the equation 1 and the equation 23/√45=√45/LJ------> 3*LJ=45-----> LJ=45/3LJ=15 unitsthe response is LJ=15 units


Add you answer