Suppose aa represents some number of radians where 0<a<π/2, and cos(a)=0.7 and sin(a)=0.72. Determine the values of the following expressions. cos(−a)= 

sin(−a)= 

Hint: it might help to start by drawing a diagram of two angles: one with a measure of a radians, and one with a measure of −a radians.

How can you solve an equation with a variable on both sides? complete the explanation. you can solve the equation by using *(blank)* operations to get the variable terms on one side of the equal sign and the constant terms on the *(blank)* side. then *(blank)* both sides by the coefficient of the resulting variable term.

Suppose the probability of selling a car today is 0.28. find the odds against selling a car today.

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