Right triangle trigonometry college algebraic

A. As a group, work together to submit the answers to the following problems. Use the Small Group Discussion Board to divide tasks, discuss strategies for solving problems, and check each other's work. The finished product should be one combined document for the entire group, showing all calculations and graphical representations used. 1. Find the length L from point A to the top of the pole. b L 28ft 60 A C 2. Lookout station A is 15 km west of station B. The bearing from A to a fire directly south of B is S 37°50' E. How far is the fire from B? 3. The wheels of a car have a 24-in. diameter. When the car is... click for more

Trigonometry question

Two vibrations, x1 = 3 sin(10t + 3.14/6) and x2 = 2 cos (10t - 3.14/6) Where t is in seconds, are superimposed. Can you show me how to determine the time at which the amplitude of the resultant vibration, x1+x2, first reaches a value of 2?

Determine an expression for the instantaneous power

Determine an expression for the instantaneous power in the circuit, p=iv, as the sum of two cosines The instantaneous current and voltage in an electric circuit are given by i = I cos 50*3.14*t v = V cos (50*3.24* t + 3.14/6) If I is 3mA and V is 5V, what is the maximum value of p in watts, and the first positive value of t at which it occurs.

Need some help with homework assignment

(See attached file for full problem description with proper formatting and symbols) --- 1. The hypotenuse of a 30-60-90 triangle is 9. Find the perimeter. I worked through this one and came up with : 27 9√3 --- + ------ 2 2 I am not sure if I can take the 2 away or not. Please help if you can. 2. I am so lost with this one its not funny (-.6t/40) _______________ The displacement, d=-7e cos(√(pi/3)^2-0.36/1600) t) Should read: d= negative seven (e) to the negative .6t divided by 40, COS (pi divided by 3 all squared - .36/1600 all under the square root symbol, t ... click for more

Proving

Hello, im having troubles with this question: Prove : tanà˜ + 1 / tanà˜ = 1 / sinà˜cos à˜ I'm not quite sure how I would prove this, I know it is a certain formula, but I don't not know how it applies.