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 ( 16+ )
Otras preguntas
A school band consist of 45 boys and 50 girls. Of the total number of boys, 18 play the drums. What percent of the boys in the band play the drums?
When is the best time for women to perform a breast self exam?
1. According to the passage, what can be inferred about how Elizabeth Cady Stanton’s personal qualities affected the women’s suffrage movement? Her enthusiasm g
one of the tallest dog breeds is the great dane which stands over a meter tall. one of the shortest is the pomeranian which stands about 20 centimeters tall bas
This nutrient helps protect vital organs like your heart, kidneys, and liver. It also helps keep your body warm. A) fats B) carbohydrates C) phospates D)
Ed is on a road trip. He has already traveled 214 miles and is driving at a rate of 66 miles per hour. Which equation could be used to find how many hours, x, E
Hurry answer fast thx
What is Peter's line before 'how do you turn a phrase?' In an episode of family guy
How did the Black Death effect Catholics
Use Numerical Expressions To Find the answer Yassmine brought 4 bracelets. Each bracelet cost $3 Darryl had a board that is 8 feet long. He cuts into pieces th