Trigonometric functions

Find value without calculator sin (arccos1/4)

Electromotive Force : Minimizing Time

For an electric circuit, let V=cos 2pi(t) model the electromotive force in volts at t seconds. find smallest positive value of t where 0

Trigonometric Function : Solve for solution in the interval [0,2pi]

The two graphical methods are intersection-of-graphs method f(x)=g(x) correspond to the x-coordinates of the points of intersection of the graphs of y=f(x) and y=g(x). or can use the X-Intercept method f(x)=0 are represented by the x-intercepts of the graph of y=f(x). tan3x=3tanx

Solve for exact solution in the interval [0degrees, 360degrees).

Solve for exact solution in the interval [ 0degrees,360degrees). Use the double angle identity to convert cos(20).

Solve the following equation for solutions in the interval [0 degrees,360 degrees)

2*sin x-sqrt.2=0

Trigonometry : Domain and Range

State the domain and range of arccos x.

Find Unknown Angles in ABC

B=48.2degrees, a=890cm, b=697cm. Please show me each step.

Vectors : Dot Product

Let u=<-2,1> v=<3,4> w=<-5,12> Use properties of the dot product. u(Dot)(v-w) or u.(v-w)

Direction and Magnitude of an Equilibrant

two tugboats are pulling a disabled speedboat into port with forces of 1240 pounds and 1480 pounds. The angle between these forces is 28.2 degrees. Find the direction and magnitude of the equilibrant.

Determine the remaining sides and angles of ABC

angle B = 18.7degrees angle C = 124.1degrees one side of the triangle AC=94.6m. use the law of sines to solve the triangle involving SAA. a/sinA=b/sinB substituting the known values given 94.6/sin18.7degrees=b/sin124.1degrees b=94.6 sin124.1/sin18.7 b=? Can you help me did I set it up right? find C from the fact that t ...continues