When the sum of two angles=90 degrees, they are called complementary angles. We can use following formula →sin(90-θ)=cosθ,cos(90-θ)=sinθ,tan(90-θ)=cotθ,cosec(90-θ)=secθ,sec(90-θ)=cosecθ We...
Are Particles of Matter Attract Each Other? YES, Particles of matter attract each other. Let us observe some activities, Activity: Make four groups and form a human chain Group1: The First group...