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

Why is the land fertile cresent so fertile

Can someone explain?

Matthew made lasagna for dinner he gave equal portions of 2/3 of the lasagna 23 friends what diagram could Matthew use to find a fraction of the whole is lasagn

Too many nutrients is not good for bodies of water. This man-made is called what? A. Cultural eutrophication B. Point-source pollution C. Eutrophication

Are transactions for which there are, at present, no contracts or agreements between parties. a.backlog exposure b.quotation exposure c.anticipated exposure d.n

Can someone help me?

The bill of rights in 1689 marked the end of the english revolution. a. True b. False

A transformation T: (x, y) (x + 3, y + 1). For the ordered pair (4, 3), enter its preimage point. (-1, 2) (1, 2) (7, 4)

Alexa knock down 70 bowling pins in 10 frames. in each frame, alexa nocked down the same number of pins. how many pins did Alexa knock down in each frame?

Which of the following is an example of a print format? text document video clip sound file digital image plz help