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Tutors Answer Your Questions about Trigonometry-basics (FREE)
Question 180669: Given that cosA= -3/8, the one true statement is?
1. tan A = square root55/3, only
2. sin A= + with minus underneath square root 55/8
3. sin A= + with minus sugn under 3 square root2/4
4. sec A= + with minus under 8/3
Click here to see answer by eperette(173)   |
Question 180677This question is from textbook
: Approximate, to the nearest 0.1°, all angles A in the interval [0°, 360°) that satisfy the equation. Separate your answers by commas.
(a) tanA = 3.8948
(b) cotA = -0.9205
Thanks!! This question is from textbook
Click here to see answer by stanbon(26297) |
Question 180753: To graph a straight line passing through (5,-3) with slope -3, a second point is found on the line by starting at (5,-3) and going.
a. 5 up and 3 to left
b. 3 up and 1 to right\
c. 3 down and 3 to left
d. 3 down and 1 to right
Click here to see answer by Alan3354(6097)  |
Question 180984: The one false statement is;
a. The sine of an angle in the second quadrant is the sine of the reference angle.
b. The cosine of an angle in the third quadrant is the negative of the cosine of the reference angle.
c. The tangent of an angle in the second quadrant is the tnagent of the reference angle.
d. The secant of an angle in the fourth quadrant is the secant of the reference angle.
Click here to see answer by stanbon(26297) |
Question 181095This question is from textbook
: Find the amplitude, the period, and the phase shift for the given equation.For any fractions, enter as 'a/b' with no spaces.
y = 7*sin(5x - Pi/2)This question is from textbook
Click here to see answer by Alan3354(6097) |
Question 181094This question is from textbook
: Find the amplitude, the period, and the phase shift for the given equation.For any fractions, enter as 'a/b' with no spaces.
y = -5*sin(x/5 - Pi/2)This question is from textbook
Click here to see answer by Alan3354(6097) |
Question 181425: Hi guys! How are you all doing tonight? I am having a difficulty solving this problem and forgive me if I post my topic in the wrong section.
f(x) = xe^x
a) Determine the intervals on which f is strictly increasing or decreasing.
b)Determine the extreme value of f.
c) Determine the intervals of concavity and of convexity and the inflexion points.
Click here to see answer by Alan3354(6097) |
Question 181598: Please help me!! I am trying to help my son with his trigonometry homework and I am clueless. We have an oblique triange with angle B measuring 46.3 degrees, angle C measuring 21.2 degrees and angle A measuring 112.5 degrees. Side a = 9.2. What is the measurement of side b? THANKS for any help!!
Click here to see answer by stanbon(26297) |
Question 181607: Stanbon, you are our hero!! We have an oblique triangle with angle B measuring 46.2 degrees. Side c measures 7.3, side b measures 10.3. The values given for sin(46.2) are 0.7218, and for cos(46.2) is 0.6921. What is the value of sin C?
Click here to see answer by Mathtut(3670) |
Question 181607: Stanbon, you are our hero!! We have an oblique triangle with angle B measuring 46.2 degrees. Side c measures 7.3, side b measures 10.3. The values given for sin(46.2) are 0.7218, and for cos(46.2) is 0.6921. What is the value of sin C?
Click here to see answer by Edwin McCravy(2922) |
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