Question:
Finding the perimeter of a right triangle given hypotenuse and angles; Displacement of an oscillating bob; Completing a trigonometric identity; Trigonometric graphs
1. The hypotenuse of a 30-60-90 triangle is 9. Find the perimeter.
27/2 + 9√3/2
2. I am so lost with this one its not funny
(-.6t/40) _______________
The displacement, d = -Te 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
What is the displacement of the bob at the end of the first oscillation?
3.Identify the expression that completes the equation so that it is an identity.
1-sin u cos u
_____ + ____ =
Cos u 1-sin u
-1
4. What is the graph of y = cos (-x) on the interval -5 less than or equal to x less than or equal to 5?
5. Rewrite √3/2 sin x + 1/2 cos x in the form k sin(x+a)