emukas
emukas
29-08-2017
Mathematics
contestada
I need to solve question 3
Respuesta :
mreijepatmat
mreijepatmat
29-08-2017
3) 3.sec² Ф = 4.tan² Ф
but sec² Ф = 1/cos² Ф
3/cos² Ф = 4.tan² Ф
3/4 = (tan² Ф).(cos² Ф) ; tan² Ф = sin² Ф/cos² Ф
3/4 = (sin² Ф)x(cos² Ф)/(cos² Ф)
sin² Ф = 3/4
a) sin Ф = +(√3)/2 and b) sin Ф = - (√3)/2
sin Ф = + - (√3)/2 → Ф =π/3 + kπ/3
Answer Link
VER TODAS LAS RESPUESTAS ( 33+ )
Otras preguntas
If you are stop for you do you are you refuse to submit to a breathalyzer test and it is the second time that you have been stopped you are guilty of a _______
How big is germany compared to the united states?
Calculate how many molecules are present in the following quantities. 8.2 g of H2O 14.4 g of C6H8
PLEASE HELP ASAP!!! Breakfast-skippers commonly struggle more with _______ than do breakfast eaters. A. muscle exhaustion B. undesired weight gain C.
moana openes a savings account that has an annual simple interest rate of 4.5% if she open the account with $2300 how much will be in the account at the end of
The concert featured an eclectic mix of bands who played many different kinds of music.
What former communist east european states have joined the eu?
What's the best of Use uterus and vagina in the same sentence
The largest prime factor of thirty-eight is _____. a1 b2 c19 d38
Why are the sounds of animals not properly called language? Animals cannot acquire any of the four characteristics of language because of physical and mental l