jazmynhawkins29
jazmynhawkins29
23-07-2017
Mathematics
contestada
If sin 42° =2/3, then cos 48°=
Respuesta :
mreijepatmat
mreijepatmat
23-07-2017
We know that: sin Ф = cos(π/2 - Ф) ↔ sin Ф = cos(90° - Ф)
Then:
sin 42° = cos(90° - 42°) = cos 48°
IF sin 42° = 2/3, the cos 48° = 2/3
Answer Link
irspow
irspow
23-07-2017
sinα=cos(90-α) is a basic identity.
if sin42=2/3 then cos(90-42)=2/3 as well (90-42=48)
Answer Link
VER TODAS LAS RESPUESTAS ( 58+ )
Otras preguntas
what is the answer to 3p-5>2p+p-7
What are the prime numbers of numbers 1-49?
how did other nations contribute to the american revolution?
Which choices are in the solution set of the inequality below? Check all that apply. 20x>70 A: 6.5 B: 3 C: 3.5 D: 1 E: 5 F: 4
Which mathematical sentence most accurately expresses the information in the problem below? Crystal has 100 compact discs that she wants to put into boxes each
If (-3, y) lies on the graph of y = (1/2)x, then y =
After a rock is rounded how does weathering affect it
what is the answer to 3p-5>2p+p-7
What is 47% of 164 while using a fraction to estimate the percent of each number.
the kind of lake that formed when a river meanders
