1. Given (9, 12) is a point on the terminal side of θ, find cos θ.
2. Evaluate cos θ when sin θ = -3/8 and θ is in Quadrant IV.
3. Given (6, 8) is a point on the terminal side of θ, find sin θ.
(Please help me with these, this is for my final and I need to turn it in today and I don't understand these last 3 problems)

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total

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