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Answers by Violetta A.

Do square to both sides of equation  sin^2(theta)-2sin(theta)cos(theta) +cos^2(theta) = 2 1 - 2sin(theta)cos(theta) =2 because sin^2+cos^2 =1 2sincos is formula for double angle, so you can substitute: 1-sin(2theta) = 2 -sin(2theta) =1 find 2theta , it...

Let time = x identify velocity for both ants. first ant has the velocity 139.61/23 =6.07 cm/min the second ant has velocity 88/1.6 =55cm/min they both traveled the same time the equation will look: 6.07x +55x =150.41 solve for x