In a rhombus PQRS,the diagonals intersect at O.given that angle=120 degree and OP=3 cm.what is the side of the rhombus.
 👍
 👎
 👁
 ℹ️
 🚩
1 answer

What angle = 120 ?
If you mean angle PQR for example
then
triangle PQO is a 30 60 90 triangle
the cos 30 = 3/side
side = 3/cos 30 👍
 👎
 ℹ️
 🚩
answered by Damon
Answer this Question
Related Questions

Geometry
When constructing an angle bisector, why must the arcs intersect?
 asked by Anony
 3,831 views

geometry
I'm stuck on this question please help. "Lines p and q intersect to form adjacent angles 1 and 2.If angle 1=3x+18 and angle 2=8y70,find the values of x and y so that p is perpendicular to q.
 asked by Rick
 1,027 views

geometry
7. Verify that parallelogram ABCD with vertices A(–5, –1), B(–9, 6), C(–1, 5), and D(3, –2) is a rhombus by showing that it is a parallelogram with perpendicular diagonals.
 asked by jasmine
 4,265 views

Math
In a right triangle JKL, angle KJL measures 60 degrees. When drawn, the angle bisectors of angle JKL and LJK intersect at point M. What is the obtuse angle JMK
 asked by Peggy
 2,446 views

Maths
The Arc of a circle of radius 20 cm subtends an angle of 120 degree at the centre. Taking 3.142 for π to calculate the area of the sector correct to the nearest cm square.
 asked by Obiejezie ifunanya
 1,369 views

Geometry
Construct a triangle ABC, in which angle B =60 degree, angle C =45 degree and AB +BC+CA=11cm
 asked by ............
 495 views

Math
Each of the following statements describes a quadrilateral. Which of the quadrilaterals are NOT parallelograms? Choose three. 1: The diagonals are congruent, but the quadrilateral has no right angles. 2: Two consecutive sides are congruent, but the figure
 asked by SkatingDJ
 2,396 views

Physics
Calculate the tension in the two ropes if the person is motionless. Person weighs 76kg and 15 degree angle rope one and 10 degree angle rope 2
 asked by Susie
 3,825 views

Math/Physics
Find the magnitude of the resultant force and the angle it makes with the positive xaxis. (Let a = 30 lb and b = 16 lb. Round your answers to one decimal place.) lal point upward as a 45 degree angle on the first quadrant lbl point downward as a 30
 asked by #1
 12,213 views

math
The number of diagonals, d, in a polygon of n sides is given by the formula d=n^23n/2. If a polygon has 90 diagonals, how many sides has it? a. 8 b. 10 c. 12 d. 15 e. 20 please answer and explain
 asked by thomas
 2,392 views

maths: plzz help
(a) A polygon with n sides has a total of 1/p*n(nq) diagonals, where p and q are integers. (i) find thhe value of p and q (ii) find the total number of diagonals in a polygon with 100 sides (iii) find the number of sides of a polygon which has a total of
 asked by preeti
 2,597 views

Maths
Permutation and combination A diagonal of a polygon is defined to be a line joining any two nonadjacent vertices. 1.Show that the number of diagonals in a 5 sided polygon is(5 2) 5. 2.how many diagonals are their in 6 sided polygon? 3.Show that the
 asked by Raj
 2,005 views

Geometry
One diagonal of a rhombus makes a 27 degree angle with a side of the rhombus. If each side of the rhombus is 6.2 inches find the length of each diagonal to the nearest tenth.
 asked by Alyssa
 1,767 views

Math
Use your protractor to find the measure of the angle to the nearest degree. 1.Angle S Anyone know how am I suppose to find the degree when it only telling me the vertex(S) ?
 asked by Shadow
 1,903 views

Algebra 1
A right triangle has a 40 degree angle. The hypotenuse is 10cm long. What is the length of the side opposite the 40 degree angle? I got 6.4cm but not sure of how I got it.
 asked by Steve
 1,642 views

math
The supplement of an angle measures 11 times its complement. Then the measure of the angle is: (A) 9 degree (B) 99 degree (C) 81 degree (D) 90 degree (E) none of these not just answer, please tell me how to do it
 asked by vincent
 1,715 views

Calculus
The curves r1(t) = 5t, t^2, t^4 & r2(t) =sin t, sin 4t, 3t intersect at the origin. Find their angle of intersection, θ, correct to the nearest degree.
 asked by Anon
 1,007 views

Math
In the figure below angle y and angle x form vertical angles angle y forms a straight line with the 60 degree angle and the 70 degree w Angle Write and solve an equation to determine the measure of angle c
 asked by Tori
 1,976 views

MATH
Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle
 asked by Anonymous
 4,005 views

Math solid mensurations
rhombus ABCD has diagonals that intersect at E. DF is drawn perpendicular to DC and AD at D. With AB = 10cm,
 asked by Anonymous
 1,861 views
Still need help?
You can ask a new question or browse existing questions.