Afish tank, filled with water, is 100cm long,60cm wide and 40cm high. it is tilted resting on a 60cm edge, with the water level reaching c, the midpoint of ab. find the depth of water in the fish tank once ab is returned to a horizontal position.

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.

Find all the angles that satisfy the equation cos(θ)=32