xjwill102p3mpp3 xjwill102p3mpp3

04-02-2018
Mathematics

contestada

How do I do this?

Express the following as trigonometric ratios of either 30, 45 or 60 degrees and hence find their exact values

A) sin120
B) cos225
C) tan390

Respuesta :

Аноним Аноним

04-02-2018

A sin120 = 2 sin60 cos 60 = 2 * sqrt3/2 * 1/2 = sqrt3/2

B. cos 225 = - cos 45 = - 1 / sqrt2

C tan 390 = tan 30 = 1 / sqrt3

Answer Link

Otras preguntas

What observations of desert pavements undercut the hypothesis that desert pavements form through deflation? choose all that apply?

8(2 1/2x-3/4)-1/4(1-x)=1/2 Can someone guide on thins linear equation please? How to solve it? Thanks

What Archaeological evidence taught scholars about the culture of the Mississippians?

You put the names of all the students in your class in a paper bag. There are 19 boys and 12 girls. If you draw a name at random, what is P(boy’s name)?

It takes Kayla 12 minutes to walk from her house to her grandparents' house. She walks to and from their house twice a week. About how many minutes each week do

The diagram below shows two models of the atom. Thompson's and Rutherford's model of atoms The models can be best used to (2 points) explain that all atomic the

If the solvent front is 68 mm and the ring front of an unknown is 48mm from the original spot, what is the rf value?

Choose the statements that ACCURATELY describe issues involving the impeachment of Andrew Johnson.

Please help with 2b thanks

What process of the hydrological cycle is maintained by the ocean’s large surface area ?