1. trigonometry

    ---I asked this question Solve the following right triangles: a. a=117 ft, b=16.35 ft b. B=8 degrees 29',and a=32.8 ft Reiny was kind enough to post this reply. "solving" a triangle involves finding all missing sides and angles, so in a) you found the
  2. math

    if the sides are 18 24 and 30 what kind of angle is it
  3. Geometry

    I have to angles and a side how do I do this Angle 1: 90 degrees Angle 2: 63 degrees Side 1: 5 mm I know angles need to add up to 180 so 90 +63=153 180-153=27 so the angle is 27 How do I figure out the sides? I have 5mm to start I am really not sure I
  4. Math

    suppose that you know that a given parallelogram has at least one right angle and at least two adjacent sides that sre congruent. Can you make a conclusion about what kind of parallelogram this is? I say no because it can be a square or a rectangle.
  5. Geometry

    Given quadrilateral ABCD,ABllDC, diagonal AC. we can prove that angle 1= angle 2, but cannot prove angle 3=angle4 Why is this. What must be true about the sides of the Quadrilateral in order to prove that angle 3 is congruent to angle 4? My answer: The
  6. Geometry

    Given quadrilateral ABCD,ABllDC, diagonal AC. we can prove that angle 1= angle 2, but cannot prove angle 3=angle4 Why is this. What must be true about the sides of the Quadrilateral in order to prove that angle 3 is congruent to angle 4? My answer: The
  7. geometry

    the sides of a quadrilateral abcd are 6cm,8cm,11cm and 12cm respectively,and the angle between the first two sides is a right angle.find its area.
  8. geometry

    solution of the questions The sides of a quadrilateral ABCD are 6 cm, 8 cm, 12 cm and 14 cm (taken in order) respectively, and the angle between the first two sides is a right angle. Find its area.
  9. math

    solution of the questions The sides of a quadrilateral ABCD are 6 cm, 8 cm, 12 cm and 14 cm (taken in order) respectively, and the angle between the first two sides is a right angle. Find its area.
  10. math

    Two sides of a triangle have lengths 8 m and 24 m. The angle between them is increasing at a rate of 0.05 rad/s. Find the rate at which the area of the triangle is changing when the angle between the sides of fixed length is 135°. Round your answer to two
  11. Angle question

    Quadrilateral JKLM is a rhombus. If mangleLMK = 36, find mangleKJM In the right triangle ABC, mangleB = 90, AB = 5, and AC= 12. Find BC. Round to the nearest tenth, if necessary. Help? Is AB a side and AC a side? I can't tell from your description which
  12. Math

    Prove that if the sides of one angle are parallel to the sides of another angle, the angles are congruent. Given: BA||ED, BC||EF, AND BEG Prove:angle ABC is congruent to angle DEF
  13. Geometry

    Please answer at least one . PLEASE 1. Triangle XYZ has a right angle at Y. V,W are on XZ such that XV=XY. WZ=YZ, find ANGLE VYW . 2. STUVWXYZ is a regular octagon. Find SW/ TZ. 3. The interior angles of a convex polygon form an arithmetic progression with
  14. math--fast help please

    Find the interior and exterior angle measurements of a polygon with this many sides: x=2y help? I don't want the answer, I just would like to know how to do this one. I don't see why a number of sides is being specified as an equation. The SUM of the
  15. trig

    Find csc(theta), tan (theta), and cos (theta), where theta is the angle shown in the figure. Give exact values, not decimal approximations c=10 b=7 a=7.14 the right angle is locate between sides a and b and the theta angle is an acutle angle sides b and c.
  16. trig

    A kite is in the shape of a quadrilateral with two pair of congruent adjacent sides. The lengths of two sides are 20.0 inches and the lengths of the other two sides are 35.0 inches. The two shorter sides meet at an angke of 115 degrees. A. Find the length
  17. English

    What's your personality? What are you like? 1. I'm kind of introverted. 2. I'm kind of introvert. 3. I'm kind of introvertish. 4. I'm kind of extroverted. 5. I'm kind of extrovert. ----------------- Are the answers all grammatical? Which ones are commonly
  18. Calculus

    two sides of a triangle have lengths 15 m and 20 m. the angle between them is increasing at a rate of pi/90 rad/s. At what rate is the area changing when the angle between the two given sides is pi/3 Can't seem to figure it out!
  19. brain teaser

    You are in a rectangular house with large picture windows on all 4 sides. All 4 sides of the house have a southern exposure. From one of the windows you see a bear. What kind of bear is it and why? You're at the North Pole and it is a polar bear. You face
  20. Calculus Related Rates

    Two sides of a triangle are 5 and 8 and the angle between them is increasing at .05 rad/sec. how fast is the distance between the tips of the sides increasing when the angle is pi/4
  21. Math

    Triangle ABC and RST are similar triangles. A=2(x+15)^0,angle S= 3x^0 and angle C=x^0. What are the correct measures of angle B,R,and T? What kind of angles are they?
  22. geometry

    Two triangles each have adjacent sides of length 120 feet and 180 feet. The first triangle has an angle between the two sides of 40 degrees, while the second triangle has an angle between the two sides of 60 degrees. What is the approximate difference
  23. Math

    The roof of a solar house is elevated by an angle of 50 at the front and by an angle of 40 at the back. a) what is the measure of the angle at the peak? b) what kind of triangle do these angels create? Explain why? please help , thanks
  24. geometry

    If a triangle has sides of lengths a and b, which make a C-degree angle, then the length of the side opposite C is c, where c2 = a2 + b2 − 2ab cosC. This is the SAS version of the Law of Cosines. Explain the terminology. Derive an equivalent SSS version
  25. math

    Two sides of a triangle have lengths 15 m and 18 m. The angle between them is decreasing at a rate of 0.08 rad/s. Find the rate at which the area of the triangle is changing when the angle between the sides of fixed length is 120°.
  26. Math

    Please let me know if I am right on these. Mystery #1. 1. The mystery shape has fewer than 3 lines of symmetry. 2. It has at least 1 pair of perpendicular sides. 3. It has at least 1 pair of parallel sides. 4. It has less than 1 obtuse angle. This is what
  27. geometry

    find the remaining sides and angles for the triangle ABC, if b=48 m
  28. trig

    ABC- with angles AB, and C and sides AB,BC, and AC, angle B is right 90degree angle, if sin of angle A is 0.5, side BC 8in., what is length of AC
  29. OldBridge

    Triangle ABC has sides of: AB=25 BC=4 CA=26 Angle B is a Rt. Angle. What is the approx. measure of Angle A? How do you find the answer? Thanks, Jane
  30. mat116

    In a triangle ABC, angle B is 4 times angle A and angle C is 16 degrees less than 5 times angle A. What is the size of angle A _____ B _____ and C _____ I would like to learn this so please be so kind to walk me through the steps. I appreciate you very
  31. Trig

    If b=5 , the angle C=50 and the angle A=50 find the other angle B and the remaining sides and . Give your answer to at least 3 decimal places.
  32. math

    If you begin with a right triangle with sides a, b, and c and decrease the right angle so it is an acute angle, how does a2+b2compare with c2 Answer this question for the situation where you increase the right angle so that it is obtuse.
  33. geometry

    In triangle ABC, angle C is a right angle. Find the remaining sides and angles. Round your answer to the nearest tenth. angle B = 52 degrees, b = 10
  34. geometry

    how do u find the missing angle of a right triangle where the the sides are 3,4,5 and its angle inside is a 90 degree angle
  35. math

    The measure of an interior angle of a regular polygon is 135 degrees. Find the number of sides in the polygon. This is what I tried: 180(x-2)=135 [Interior Angle Sum Theorem] x-2=.75 x=2.75 That can't be right though. Help? Not sure about your formula.
  36. math

    how do we indicate the congruence at two triangles with two sides and the contained angle of the one equal two corresponding sides and the corresponding contained angle of the other ?
  37. Math

    Sofia has a plate that has 4 equal sides, 2 pairs of parallel sides, and no right angle. Which quadrilateral is it?
  38. Calculus

    Two sides of a triangle have lengths 8 m and 13 m. The angle between them is increasing at a rate of 0.08 radians /min. How fast is the length of the third side increasing when the angle between the sides of fixed length is π/3 radians. Please help I have
  39. geometry

    What has 4 equal sides, and both paris of opposite sides are parallel but it dose not contain a right angle?
  40. Geometry

    In a regular polygon (equal sides and angles), you use (n-2)180 to find out what the interior angle sum is (n=number of sides in polygon) and you divide by that number by whatever n is to find out the measure of an individual angle, right? Well, there is
  41. triginometry

    Two sides of a parallelogram are 9 and 13 with an included angle of 57 degree & 29 minutes.fine the distance between the longer sides.
  42. math

    what is angle B if triangle ABC is given such that angle A is 46° sides a=4 &b=8 side a faces angle A..
  43. geometry (check answers)

    Determine whether you can construct many, one, or no triangle(s) with the given description. a) a triangle with angle measures of 50°, 70°, and 100° no b) a triangle with one angle measure of 60° and one 4-centimeter side no c) a scalene triangle with
  44. precalculus

    The four sequential sides of a quadrilateral have lengths a=3.6, b=5.3, c=8.4, and d=10.2 (all measured in yards). The angle between the two smallest sides is alpha = 117°. What is the area of this figure?
  45. Calculus

    Two sides of a triangle have lengths 8 m and 13 m. The angle between them is increasing at a rate of 0.08 radians /min. How fast is the length of the third side increasing when the angle between the sides of fixed length is π/3 radians.
  46. 4th grade

    Megan drew a shape with four sides. Two of the sides are parallel. the other sides were not parallel. What kind of shape did Megan draw?
  47. math

    A rhombus has sides 10 cm long and an angle of 60 degrees. Find the distance between a pair of opposite sides. can u plz post the answer down with explanation. thanx, :)
  48. Algebra

    Suppose a triangle has angles A,B, and C. Angle C is the right angle. Find the measures of the other sides to the nearest whole number. < means angle symbol. 1.BC=9,m
  49. geometry

    Fin the volume of a triangular prism with height 16cm, base (a right triangle with sides 7cm, 8cm, and 10cm and the right angle between shorter sides.)
  50. Geometry

    We're learning about classifying triangles with Side-Angle-Side, Angle-Side-Angle, etc. I'm kind of confused-- I have the definitions, but when I am shown a picture, I have trouble figuring out which it is. Could you please explain it or provide a link
  51. Trigonometry (Coterminal Angles)

    What is the SMALLEST POSITIVE ANGLE that is coterminal with the angle having the radian measure of -10π/3? Is there any solution for this kind of question?
  52. Geometry

    1. How many sides does a regular polygon have if one exterior angle is 90 degrees? 3 4 5 6 2. The measures of three angles of a quadrilateral are 80, 90, and 103 degrees. Find the measure of the fourth angle. 67 77 87 97 3. The sum of the interior angles
  53. trigonometry

    if the three sides of a triangle is 4,5,6 then the cosine of the angle between the sides 4 and 5 is
  54. Algebra II

    1. Find the value of 5 + 8 x 2 divided by 4 - 11 2. Evaluate (a-y)^2 + 2y^3, if a =2 and y= -3 3. Evaluate -|a-3b|, if a=-2 and b = 6 4. The formula A= 180 (n-20 OVER N relates the measure A of an interior angle of a regular polygon to the number of sides.
  55. Physics

    Trace by drawing the path of a ray of light shown in 90 degrees. This ray is incident in a perpendicular direction on the figure through a glass triangular prism on one side of the right angle. Given that the two sides of the right angle are equals and
  56. Math(geometry)

    I need to know how to find the meausure of a triangle using vertical angles, and also how to measure a triangle using linear pairs... Oh, I hope I'm not too late with an answer for you... To measure a triangle using linear pairs, you have to use the
  57. geometry

    write an expression for the sum of the angle measures in a regular polygan with n sides. then wirte an expression for the measure of each angle in a regular polygan with n sides.
  58. math

    a. If you begin with a right triangle with sides a, b, and c and decrease the right angle so it is an acute angle, how does compare with ? b. Answer this question for the situation where you increase the right angle so that it is obtuse. I have to use a
  59. Math (Trig)

    A triangle ABC has a trisected angle A. The angle trisectors divide side a (opposite angle A) into three segments which are BD, DE, and DC. The lengths are 2, 3, and 6, respectively. What are the lengths of the other sides?
  60. Maths

    X and Y are points on the sides BC and AC of a triangle ABC respectively such that angle AXC = angle BYC and BX = XY. Prove that AX bisects the angle BAC. I believe the first step is to prove ABXY is a cyclic quadrilateral. Unfortunately, I don't know
  61. Math

    Triangle ABC is similar to triangle APQ, with angle CBA equal to angle QPA and angle A common to both triangles. The lengths of sides AB, AP and PQ are 90 cm, 60 cm and 30 cm. Calculate the length of side BC.
  62. Math

    In a triangle ABC, with angles A, B, and C and sides AB, BC, and AC, angle B is a right (90°) angle. If the sin of angle A is 0.5 and side BC is 8 inches long, what is the length of side AC?
  63. math

    How many sides does a regular octagon have, and what do we know about its sides and angles I think a octagon has 8 sides but I don't know about the angles...I'll go and look it up and if I find out I'll post it I found on wikipedia that it's internal
  64. Math

    Select the geometric figure that possesses all of the characteristics: (1) four equal sides (2) both pairs of opposite sides are parallel (3) it doesn't contain any right angle A) square B) parallelogram C) rhombus D) isosceles triangle I know it's not A
  65. Math

    line BC is one side of a regular n-gon. The sides next to line BC are extended to meet at W. Find the measure of angle W in terms of n That's a triangle. Use the facts about the relationships between the angles. If the ngon is regular, then all sides are
  66. trig

    If a=8, the angle C=50 degrees and the angle A=35 degrees find the other angle B and the remaining b and c sides. Give your answer to at least 3 decimal places.
  67. Math

    Yesterday I learned to solve a right triangle assuming I know the 3 angles and 1 side. I can now establish the lengths of the 2 other sides using a sine table I printed off the net. Today I hope I will learn to solve a right triangle but now I only know 1
  68. Geometry

    Can some one please check these for me.Thanks Angle DEF is similar to Angle HJK and the scale factor of angle DEF to anle HJK IS 5/2. If EF =15 FIND JK Here is what I came up with Am I correct 5/2 = EF/JK 5/2 =15/JK 5(JK)=30 JK=30/5 JK=6 Given: ABCD is a
  69. Math

    Find an angle such that 3 times the complement of the angle is 10 degrees less than the supplement of the angle. I know that supplement means 180 and complement is 90. I don't know what kind of problem this is.
  70. geometry

    Can some one please help me figure the angles out? sorry I can't copy and paste the figures... The 17in x 17in square below is given. We have chosen 4 points M, N, P, and Q one on each of its sides as shown in the figure and joint them to obtain a new four
  71. Algebra Alley(MATH)

    Triangles ABC and RST are similar triangles. Angle A=2(x+15)^0 angle S=3x^0,and angle C=x^0. What are the measures of angles B,R,and T? What kind of triangles are they?
  72. TRIANGLE MATH HELP!!!

    Are the figures below similar? Why or why not? Determine whether the triangles below are similar. (Triangle M S I is shown on the left. Side M S is labeled 4. Side S I is labeled 6. Side M I is labeled 8. Angle M is 47 degrees. Angle S is 104 degrees.
  73. Math

    1. the mystery shape has fawer than 3 lines of symmetry. 2. it has at least 1 pair of perpendicular sides. 3. it has at least 1 pair of parallel sides. 4. it has less than 1 obtuse angle.
  74. Math

    An isosceles triangle has an area of 24 cm squared, and the angle between the two equal sides is 5 pi/6. What is the length of the two equal sides? I can't figure out how to set up this problem please help! Thank you!
  75. Mathss

    Calculate the area of the following triangles, giving your answers to 2 decimal places: (a) The right-angled triangle with sides a=16, b=63, and c=65. (b) The triangle with angle α = 40° and adjacent sides b=10 and c=20.
  76. math

    a college football pennant is in the shape of an isosceles traingle . the base is 20 long the sides meet at an angle of 35 degrees.how long are the sides?
  77. maths

    Calculate the area of the following triangles, giving your answers to 2 decimal places: (a) The right-angled triangle with sides a=16, b=63, and c=65. (b) The triangle with angle α = 40° and adjacent sides b=10 and c=20.
  78. Agent HELP! Trigonometry

    An isosceles triangle ABC has two sides 17cm in length and a base 10cm in length. Find the size of the angle between the equal sides.
  79. math

    The lenght of each of the two sides of an isisceles triangle is 10 meters. The angle between the two congruent sides is x. find the area of the triangle as a function of x/2.
  80. Trigonometry

    if the lengths of the sides of an oblique triangle are 250 m. and the measure of the angle opposite of the later side is 37 degree 45'30", what are the possible lengths of the other sides?
  81. calc

    An isosceles triangle has an area of 24 yd², and the angle between the two equal sides is 166°. Find the length of the two equal sides.
  82. math

    The lenght of each of the two sides of an isisceles triangle is 10 meters. The angle between the two congruent sides is x. find the area of the triangle as a function of x/2.
  83. maths

    Two sides of a triangular field are 120m and 200m.If the angle between the sides is 68 degrees. find the area of the field in hectares
  84. PROBLEM SOLVING IN MATHEMATICS

    what do you need to know to solve this? you have kite ABCD. angle B is at the top of the kite and measures 80 degrees. angles A and C are on the sides and angle D is at the bottom of the kite. what is the largest siza that angle A or C could be?
  85. PROBLEM SOLVING IN MATHEMATICS

    what do you need to know to solve this? you have kite ABCD. angle B is at the top of the kite and measures 80 degrees. angles A and C are on the sides and angle D is at the bottom of the kite. what is the largest siza that angle A or C could be?
  86. Geometry

    Find the measures of an interior angle and an exterior angle of a regular polygon with 6 sides.
  87. math

    Find the measure of a exterior angle and a interior angle of a polygon with x+2y sides. How do you do that?
  88. Math

    If you begin with a right triangle with sides a, b, and c and decrease the right angle so it is an acute angle, how does a^2 + b^2 compare with c^2 ?
  89. geometry

    if i know one angle between the diagonals at intersecting point , how can i find the angle between the sides and the diagonal?
  90. Math- geometry

    Angles in a circle. Is the angle in the center equal to any other angle on the sides or top?
  91. math

    the diagonal of a rectangle with side A,B(B>A)makes an angle 60 degree with one of its sides.the ratio of the volumes of the cylinders generated by revolving the rectangle about each of the adjacent sides is
  92. alg2/trig

    To the nearest minute, what is the approximate size of the smallest angle of a triangle whose sides are 4,5, and 8? How do I find the angle?
  93. Math

    With a figure with 1 pair of parallel sides and 2 right angles, and the third angle is 52 degrees, what is the measure of the fourth angle?
  94. math

    Circle J has a radius of 6 in. JK and JL form an angle that is not a straight angle. The lenght of KL is not 6 in. Classify ^JKL accordingly to its sides.
  95. Maths grade 8

    Help how do I find "one exterior angle 180- interior angle" of 6,7, 9, 12 sides please show your work so I can understand thank you
  96. Math

    In trapezium PQRS, the sides PQ and SR are parallel. Angle RSP is 120 . and RS = SP = 1/3PQ. What is the size of angle PQR ?
  97. algebra 1

    suppose triangle ABC has right angle C. find the measures of the other sides to the nearest whole number. measurement of angle A is 40 BC is 5
  98. GEOMETRY

    ABCD is a cyclic trapezium whose sides AD and BC are parallel to each other .If angle ABC = 72 degree then what is the measure of the angle BCD .
  99. Math

    The measure of each interior angle of a regular polygon with n sides is [(n - 2)180 / n] degrees. What is the measure of each interior angle of a regular polygon with n sides, in radians? A. (n - 2)pi / 4n B. (n - 2)pi / 2n C. (n - 2)pi / n D. (n - 2)2pi /
  100. Calculus

    1) Find correct to six decimal places root of the equation cos(x)= x for xE[0, pi/2] using Newton's Method. 2) A triangle has two constant lengths of 10 cm and 15 cm. The angle between two constant sides increases at a rate of 9 deg/min. Find the rate of