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Trigonometry
Polar coordinates of Q are (26, 80). Which is x-axis of this point in rectangular system?
A. 4.51
B. 4.25
C. 5.21
D. 5.41
A. 4.51
B. 4.25
C. 5.21
D. 5.41
Trigonometry
Point M(12, 18) is given in a rectangular plane. Which is the distance of this point from the pole?
A. 12.63
B. 18.36
C. 20.46
D. 21.63
A. 12.63
B. 18.36
C. 20.46
D. 21.63
Trigonometry
sec A + tan A = x, then sec A = ?
Trigonometry
Which pair represents (4, –4) in polar plane?
A. (6.56, 47.77)
B. (6.56, 43.77)
C. (5.66, 44.76)
D. (5.56, 47.77)
A. (6.56, 47.77)
B. (6.56, 43.77)
C. (5.66, 44.76)
D. (5.56, 47.77)
Trigonometry
The distance of the point R from the pole is 65. Its direction forms a 60 degrees angle with x-axis. Which is the y-coordinate of Q?
A. 54.28
B. 54.29
C. 56.29
D. 56.82
A. 54.28
B. 54.29
C. 56.29
D. 56.82
Trigonometry
Polar coordinates of Q are (26, 80). Which is x-axis of this point in rectangular system?
A. 4.51
B. 4.25
C. 5.21
D. 5.41
A. 4.51
B. 4.25
C. 5.21
D. 5.41
Trigonometry
Point M(12, 18) is given in a rectangular plane. Which is the distance of this point from the pole?
A. 12.63
B. 18.36
C. 20.46
D. 21.63
A. 12.63
B. 18.36
C. 20.46
D. 21.63
Trigonometry
please prove this:
(1+sec2A *cot2Y)/(1+sec2B *cot2 Y )=(1+tan2A*cos2Y)/(1+tan2B*cos2Y)
in above 2 is power in all case
(1+sec2A *cot2Y)/(1+sec2B *cot2 Y )=(1+tan2A*cos2Y)/(1+tan2B*cos2Y)
in above 2 is power in all case
Trigonometry
prove the following indentities
a) sin(x+y)sin(x-y)=sin^2x-sin^2y
a) sin2x+sin4x+sin6x=4cosxcos2xsin3x
a) sin(x+y)sin(x-y)=sin^2x-sin^2y
a) sin2x+sin4x+sin6x=4cosxcos2xsin3x
Trigonometry
At what point the graph of f(x) = 2cos x – 1 intersects the x-axis?
A. x=π/6
B. x=π/4
C. x=π/3
D. x=π/8
A. x=π/6
B. x=π/4
C. x=π/3
D. x=π/8
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