ryanneclardy1 ryanneclardy1
  • 10-06-2020
  • Mathematics
contestada

Evaluate cos2θ for cosθ = .

Respuesta :

LammettHash
LammettHash LammettHash
  • 10-06-2020

Double angle identity:

[tex]\cos(2\theta)=2\cos^2\theta-1[/tex]

If you know [tex]\cos\theta[/tex], just plug it in.

Answer Link

Otras preguntas

1. Which ordered pairs are solutions of the inequality 5y - 3x ≤ 7? A. (0,0) B. (3,5) D. (1, 2.5) (C.) (-2,-5) E. (5,-3) Graph
LIMITED TIME!! HELP!!!! In the grass species Anthoxanthum odoratum, some of these plants live near mines where the soil has become contaminated with metals. Mea
In Australia, for example (where our study was performed), many of the birds can fly great distances, sometimes across the whole of Australia, often because of
what had gatsby turned daisy into in his mind
All of the following criteria define a mineral except:
- In the figure shown, lines f and g are parallel. Select all angles that are congruent to angle 1. merge lane
Cash inflows are also known as disbursements.True or false
Which president was a prisoner of war?
how many triple doubles does russell westbrook have
How does a root of a plant that lacks chloroplast get energy?