In the following figure seg AB ⊥ seg BC, seg DC ⊥ seg BC. If AB = 2 and DC = 3, find `(A(triangleABC))/(A(triangleDCB))`
Find the slope and y-intercept of the line y = -2x + 3.
In the following figure, in ΔABC, BC = 1, AC = 2, ∠B = 90°. Find the value of sin θ.
Find the diagonal of a square whose side is 10 cm.
The volume of a cube is 1000 cm3. Find the side of a cube.
If two circles with radii 5 cm and 3 cm respectively touch internally, find the distance between their centres.
If sin θ =3/5, where θ is an acute angle, find the value of cos θ.
Draw ∠ABC of measure 105° and bisect it.
Find the slope of the line passing through the points A(-2, 1) and B(0, 3).
Find the area of the sector whose arc length and radius are 8 cm and 3 cm respectively.
In the following figure, in Δ PQR, seg RS is the bisector of ∠PRQ.
PS = 3, SQ = 9, PR = 18. Find QR.
In the following figure, if m(are DXE) = 90° and m(are AYC) = 30°. Find ∠DBE.
In the following figure, Q is the centre of a circle and PM, PN are tangent segments to the circle. If ∠MPN = 50°, find ∠MQN.
Draw the tangents to the circle from the point L with radius 2.7 cm. Point ‘L’ is at a distance 6.9 cm from the centre ‘M’.
The ratio of the areas of two triangles with the common base is 14 : 9. Height of the larger triangle is 7 cm, then find the corresponding height of the smaller triangle.
Two building are in front of each other on either side of a road of width 10 metres. From the top of the first building which is 40 metres high, the angle of elevation to the top of the second is 45°. What is the height of the second building?
Find the volume and surface area of a sphere of radius 2.1 cm.
Prove that ‘the opposite angles of a cyclic quadrilateral are supplementary’.
Prove that sin6θ + cos6θ = 1 – 3 sin2θ. cos2θ.
A test tube has diameter 20 mm and height is 15 cm. The lower portion is a hemisphere. Find the capacity of the test tube. (π = 3.14)
Prove that the angle bisector of a triangle divides the side opposite to the angle in the ratio of the remaining sides.
Write down the equation of a line whose slope is 3/2 and which passes through point P, where P divides the line segment AB joining A(-2, 6) and B(3, -4) in the ratio 2 : 3.
ΔRST ~ ΔUAY, In ΔRST, RS = 6 cm, ∠S = 50°, ST = 7.5 cm. The corresponding sides of ΔRST and ΔUAY are in the ratio 5 : 4. Construct ΔUAY.