samoka
samoka
02-04-2017
Mathematics
contestada
Does anyone can help me to prove that ...
Respuesta :
ghanami
ghanami
02-04-2017
hello :
by identity : cos²(x)+sin²(x) = 1
divide by cos²(x) :
cos²(x) /cos²(x) +sin²(x)cos²(x)/ = 1/cos²(x)
1+sin²(x)cos²(x)/ = 1/cos²(x)
1+ (sin(x)/cos(x))² = 1/cos²(x)
1+tan²(x) = 1/cos²(x)
conclusion :
tan²(x) = 1/cos²(x) -1
Answer Link
VER TODAS LAS RESPUESTAS ( 96+ )
Otras preguntas
For this question, A new building is formed by a square prism with a square pyramid on top. The base has an edge length of 60 feet, and the height of the prism
"Use the graphical method to solve this problem: Minimize Z = 15 X_1 + 20 X_2 Subject to X_1 + 2 X_2 ≥ 10 2X_1 – 3X_2 ≤ 6 X_1 + X_2 ≥ 6 and X_1 ≥ 0, X_2 ≥ 0"
8. What is the force of attraction between a 20,000 kg truck and a 3,200 kg car when separated by 4 meters? a. 0.0003 N b. 0.5 N c. 9.8 m/s/s d. 10 N
What is the solution set of the following system of equations? y=3x+6 y=(x+4)^(2)-10 The solution tothe system is at (-5,-9). The solutjon to the system is at (
21 shirts = $147 and 22 shirts =$154 and 23 shirts = $161 then how much does 30 shirts cost and how much does 9 shirts cost to
*Today's Assignment* Design a salary slip for the month of March 2023 with information given below. Fixed vs variable ratio- 70:30 Ctc - 18L Basic- 50% Hra- 20
Ken went to a country fair and spent $5 on admission, $6. 50 on games, and $7. 21 on food. If he had $30 before he went to the fair, how much money does he have
a radioactive sample contains 10,000 atoms. after two half-lives, how many atoms remain undecayed? a radioactive sample contains 10,000 atoms. after two half-li
Frank finds 9 coins on the floor of his car, and 3 of them are quarters. If he finds 15 more coins on the ground, at the same ratio as the coins found in the ca
what does several mean
