PQR is a triangle in which PQ = 10cm and QPR = 60oS is a ...
PQR is a triangle in which PQ = 10cm and QPR = 60oS is a point equidistant from P and Q. Also S is a point equidistant from PQ and PR. If U is the foot of the perpendicular from S on PR, find the length SU in cm to one decimal place
2.7
4.33
3.1
3.3
Correct answer is B
\(\bigtriangleup\)PUS is right angled
\(\frac{US}{5}\) = sin60o
US = 5 x \(\frac{\sqrt{3}}{2}\)
= 2.5\(\sqrt{3}\)
= 4.33cm
Find the mean deviation of 6, 7, 8, 9, 10 ...
If x + y = 12 and 3x - y = 20, find the value of 2x - y ...
Simplify the expression \(\frac{a^2 b^4 - b^2 a^4}{ab(a + b)}\)...
The sum of two numbers is 5; their product is -14. Find the numbers. ...
If 5x + 3y=4 and 5x-3y= 2, what is the value of (25x\(^2\) -9y\(^2\))?...
Marks 1 2 3 4 5 Frequency 2 2 8 4 4 The table above show the marks obtained in a given test...
Solve the simultaneous equation: x+y=2 and 3x-2y=1 ...
simplify \(\frac{\frac{7}{9}-\frac{2}{3}}{\frac{1}{3}+\frac{\frac{2}{5}}{\frac{4}{5}}}\) ...
Simplify 0.63954 ÷ 0.003 giving your answer correct to two significant figures ...