xjwill102p3mpp3
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 was a Joint Stock Colony and what was its main goal?
Which of these represent the correct ratio of boys to girls as a rate? Select all that apply. A. 12 girls for every boy B. 14 to 12 C. 14 boys for every 12 girl
What is the name of the items that combined with enzymes?​
Solve the equation. - 3(2x - 3) = -6x + 9 Solution:
What is the ordered pair for point C?
what will happen if cellsnplasma membrane suddenly encounters a cold environment
define the purpose for the field of biology
Determine the use of the prepositional phrase in the following sentence. The boy with the yellow hair ran home. adverb adjective
in a close terrarium, why does water vapour appear on the wall of the jar?​
helppppppppppp i will make as brainliset