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9.1 Determine the intersection of the planes, if any. Show your work!

T₁:3x-y + 4z -1=0

T₂ :x+2y+z+7=0

(a)

T3 : x + 3y + 2z - 5 = 0

(b) T4 2x - y - 4z -4 = 0

75 4x - 3y +z+3=0

9.2 A crate with mass 20kg is suspended from a crane by two chains that make angles of 50°

and 35° to the horizontal.

(a) Draw a diagram

(b) Use your diagram in part a) to determine the value of the tension in each chain. Show

your work!

Fig: 1