Q. 3 A3.7( 3 Votes )

If two angles and are complementary angle, let us show that

sin2α + sin2β = 1

Answer :

Given, two angles are complementary = 90°


sin2α + sin2β


sin2α + sin2(90 - α)


sin2α + cos2α


= 1


[sin2θ + cos2θ = 1]


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