A chord is 2cm from the centre of a circle. If the radius...
A chord is 2cm from the centre of a circle. If the radius of the circle is 5cm, find the length of the chord
2\(\sqrt{21}\)cm
\(\sqrt{42}\)cm
2\(\sqrt{19}\)cm
\(\sqrt{21}\)cm
Correct answer is A
From \(\bigtriangleup\) OMQ find /MQ/ by Pythagoras OQ2 = OM2 + MQ2
52 = 22 + MQ2
25 = 4 + MQ2
25 - 4 = MQ2
21 - MQ2
MQ2 = 21
MQ2 = \(\sqrt{21}\)
Length of chord = 2 x \(\sqrt{21}\) = 2\(\sqrt{21}\)cm
Calculate the value of y in the diagram...
If \(3x - \frac{1}{4})^{\frac{1}{2}} > \frac{1}{4} - x \), then the interval of values of x ...
I.S∩T∩W=S II. S ∪ T ∪ W = W III. T ∩ W = S If S⊂T⊂W, which of the above ...
Given that 2p - m = 6 and 2p + 4m = 1, find the value of (4p + 3m). ...
If \(\tan \theta = \frac{3}{4}\), find the value of \(\sin \theta + \cos \theta\)....
Find the exterior angle of a 12 sided regular polygon ...
Given matrix M = \(\begin{vmatrix} -2 & 0 & 4 \\ 0 & -1 & 6 \\ 5 & 6 & 3 \en...