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In the above figure, ∠L = 35°, find :
- m(arc MN)
- m(arc MLN)
Solution :
- ∠L = `1/2` m(arc MN) ............(By inscribed angle theorem)
∴ `square = 1/2` m(arc MN)
∴ 2 × 35 = m(arc MN)
∴ m(arc MN) = `square` - m(arc MLN) = `square` – m(arc MN) ...........[Definition of measure of arc]
= 360° – 70°
∴ m(arc MLN) = `square`
Concept: undefined >> undefined
In the given figure, ∠MNP = 90°, seg NQ ⊥ seg MP, MQ = 9, QP = 4, find NQ.

Concept: undefined >> undefined
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In the given figure, ∠QPR = 90°, seg PM ⊥ seg QR and Q–M–R, PM = 10, QM = 8, find QR.

Concept: undefined >> undefined
In the given figure, chord MN and chord RS intersect at point D.
(1) If RD = 15, DS = 4, MD = 8 find DN
(2) If RS = 18, MD = 9, DN = 8 find DS
Concept: undefined >> undefined

In right-angled ΔABC, BD ⊥ AC. If AD= 4, DC= 9, then find BD.
Concept: undefined >> undefined
In the given figure,
(1) m(arc CE) = 54°, m(arc BD) = 23°, find measure of ∠CAE.
(2) If AB = 4.2, BC = 5.4, AE = 12.0, find AD.
(3) If AB = 3.6, AC = 9.0, AD = 5.4, find AE.

Concept: undefined >> undefined
As shown figure, ∠DFE = 90°, FG ⊥ ED, if GD = 8, FG = 12, then EG = ?
Concept: undefined >> undefined
The value of 2tan45° – 2sin30° is ______.
Concept: undefined >> undefined
In the figure, ΔPQR is right angled at Q, seg QS ⊥ seg PR. Find x, y.

Concept: undefined >> undefined
If `sec alpha=2/sqrt3` , then find the value of `(1-cosecalpha)/(1+cosecalpha)` where α is in IV quadrant.
Concept: undefined >> undefined
Prove that sin6θ + cos6θ = 1 – 3 sin2θ. cos2θ.
Concept: undefined >> undefined
If the sides of a triangle are 6 cm, 8 cm and 10 cm, respectively, then determine whether the triangle is a right angle triangle or not.
Concept: undefined >> undefined
Prove that:
sec2θ + cosec2θ = sec2θ x cosec2θ
Concept: undefined >> undefined
In triangle ABC, ∠C=90°. Let BC= a, CA= b, AB= c and let 'p' be the length of the perpendicular from 'C' on AB, prove that:
1. cp = ab
2. `1/p^2=1/a^2+1/b^2`
Concept: undefined >> undefined
if `cos theta = 5/13` where `theta` is an acute angle. Find the value of `sin theta`
Concept: undefined >> undefined
Show that `sqrt((1+cosA)/(1-cosA)) = cosec A + cot A`
Concept: undefined >> undefined
Prove that, in a right-angled triangle, the square of the hypotenuse is equal to the sum of the square of remaining two sides.
Concept: undefined >> undefined
Eliminate θ, if
x = 3 cosec θ + 4 cot θ
y = 4 cosec θ – 3 cot θ
Concept: undefined >> undefined
Identify, with reason, if the following is a Pythagorean triplet.
(3, 5, 4)
Concept: undefined >> undefined
Identify, with reason, if the following is a Pythagorean triplet.
(4, 9, 12)
Concept: undefined >> undefined
