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Subject :IMO    Class : Class 7

Which of the following steps is incorrect, while constructing DABC where BC = 12 cm, ∠ABC = 60° and ∠BCA = 30°.
Steps of construction :
Step-1 : Draw a line segment BC of length 12 cm.
Step-2 : At B, draw a ray BP making an angle of 60° with BC.
Step-3 : At C, draw a ray CY making an angle of 30° with BC such that it intersects ray BP at B.

AOnly step-2
BOnly step-3
CStep-2 and step-3
DNone of these

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