Question

1. Evaluate: sin A-csc-A + cos²A - sec A + cot A+ tan-A 2. You decide to find a treasure that is buried in the side of a mountain. The diagram shows the side view of the sinusoidal mountain range. The valley to the left is filled with water to a depth of 50m, and the top of the mountain is 150 m above the water level. You set up an x-axis at water level and a y-axis 200 m to the right of the deepest part of the water. The top of the mountain is at distance x= 400 m. The treasure is located beneath the surface at the point (130, 35), as shown in the diagram. Which would be the shorter way to dig to the treasure, a horizontal tunnel or a vertical tunnel? Show your work. 150 Mountaintop Surface Water Treasure -200 400 50

Answer 1

we are supposed to answer only first question

Given 2 sina Costea & cola Jezat corat tona (sina + casa) + (cora - Cosex) + ( tona – seia) Jina Atoosa) + (-1) [Cose? A cota + (-1) (Jeen-tasa) we know sinatos a =) Cose? A - cot a=1 Seća - tar? A =) 1 + (-1) (1) + 1-1) (i) =1-1-12-) CS Scanned with CamScanner