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please solve the 25th

Asked by jaychandran1967 30th November 2017, 9:49 PM
Answered by Expert
Answer:
begin mathsize 16px style straight P with rightwards harpoon with barb upwards on top equals straight Q with rightwards harpoon with barb upwards on top equals straight R with rightwards harpoon with barb upwards on top
According space to space the space question comma
straight P with rightwards harpoon with barb upwards on top plus straight Q with rightwards harpoon with barb upwards on top equals straight R with rightwards harpoon with barb upwards on top
straight P with rightwards harpoon with barb upwards on top plus straight Q with rightwards harpoon with barb upwards on top minus straight R with rightwards harpoon with barb upwards on top equals 0
straight theta subscript 1 equals 60 degree
Given space that space straight P with rightwards harpoon with barb upwards on top plus straight Q with rightwards harpoon with barb upwards on top plus left parenthesis negative straight R with rightwards harpoon with barb upwards on top right parenthesis equals 0
rightwards double arrow straight theta subscript 2 equals negative 120 degree space as space straight R with rightwards harpoon with barb upwards on top space is space in space negative space direction.
rightwards double arrow straight theta subscript 1 equals straight theta subscript 2 over 2


end style
Answered by Expert 1st December 2017, 5:53 PM
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