Find all values of x in the interval [0°, 360°) that satisfy the equation. Round approximate answers to the nearest tenth of a degree.3 cos2 x + 2 cos x = 1
A. {51.8°, 128.2°}
B. {49.8°, 130.2°, 229.8°, 310.2°}
C. {70.5°, 180°, 289.5°}
D. {103.2°, 145.2°, 283.2°, 325.2°}
Answer: C
Mathematics
You might also like to view...
Find the infinite sum accurate to three decimal places.
A. -0.571 B. 0.143 C. 0.200 D. 0.800
Mathematics
Find the product.(p - r)(p + r)
A. p2 - r2 B. 2p2 - r2 C. p2 - 2r2 D. p2 + r2
Mathematics
IT = 90 mA, I1 = 40 mA, and I2 = 50 mA. Find I3.
a. 0
b. 10 mA
c. 40 mA
d. 50 mA
e. 90 mA
Mathematics
Find the perimeter.
A. (4x2 + 20x - 32) units B. (x4 + 20x2 - 32) units C. (x4 + 10x2 - 16) units D. (x2 + 10x - 16) units
Mathematics