What basic trigonometric identity would you use to verify that (sin2x + cos2x)/cosx=secx
2 answers:
Answer:
Step-by-step explanation:
sin(2x) = 2 sin(x) cos(x) cos(2x) = cos2(x) – sin2(x) = 1 – 2 sin2(x) = 2 cos2(x) – 1. Now I am not sure if this is right but I remember another similar formula. Here is the correct formula cot x = cos x / sin x
2 ) ( sin² x + cos² x ) / cos x = sec x
1/cos x = sec x
sec x = sec x
cos² x + sin² x = 1
Step-by-step explanation:
You might be interested in
Answer:
hlo buddy
Step-by-step explanation:
The formula for the volume of a sphere is V = 4/3 πr³.
Answer:
0.36666666666
Step-by-step explanation: That's how you do it in decimal form
Perimiter=6 times legnth of one side P=6(x+1/3y) P=6x+6/3y P=6x+2y if x=5 and y=6 P=6(5)+2(6) P=30+12 P=42 A. P=6x+2y B. 42 units is the perimiter
Answer:
d. 1,347.89
i hope I helped in time and you get a great score on your quiz !
Answer:
c
Step-by-step explanation:
1 dollar equals to 25 pesos so if u could keep multiplying that it would soon equal to 500 on 20
1 USD = 25 pesos
1x20= 20
20x25= 500