Me. use an identity to find the exact value of each expression: note: you are not allowed to use decimals in your answer. sin(96∘)cos(264∘)+cos(96∘)sin(264∘) = and sin⁡(258∘)cos⁡(33∘)−cos⁡(258∘)sin⁡( 33∘)=

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )