Math, asked by chaitanyatamhane07, 10 months ago

draw segment of length √15cm without using pythagoras. ​ please!!!!!

Answers

Answered by chandradeep1612005
2
the line can be drawm by square root spiral and represent it geometrically.
For u in geometrical representation see above
draw ab=15cm then extend 1cm at c
then find midpoint of ab by compass or perpendicular bisector.
draw a semicircle then perpendicular DB using compass ,take a arc of DB and mark it till E it is 15^-2
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Answered by amitnrw
3

Drawn seg length √15 without using pythagoras theorem​

Step-by-step explanation:

15 = 3 * 5

Step 1 : Draw a line segment PQ  = 5 cm

Step 2 : Draw a perpendicular bisector of  PQ and find mid point O

Step 3 : Draw a semi circle Taking OP as radius and O as center using compass

Step 4 : Take 3 cm from P on PQ mark it R

Step 5 : Draw a right angle at R  such that it intersect Semicircle at S

PS = √15

Δ PRS ≈ Δ PSQ

as ∠P = ∠P

& ∠PRS = ∠PSQ = 90°  (∠PSQ angle in semicircle)

=> PS/PQ = PR/PS

=> PS² = PR * PQ

=> PS² = 3 * 5

=> PS² = 15

=> PS = √15

perpendicular bisector of PQ

using compass Taking width slightly less than PQ draw arcs on both sides taking P as center

Keeping compass width same taking Q as center draw arcs such that it intersects arc drawn in previous step  at M & N

Join MN intersecting PQ at O

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