(A) cotA
(B) cosA
(C)
sec2A
(D)
cos2A
if a+b+c=7 and a3+b3+c3-3abc=175, then what is the value of (ab+bc+ca)?
(A) 8
(B) 9
(C) 7
(D) 6
If x2+4y2=17 and xy=2, where x>0,y>0, then what is the value of x3+8y3?
(A) 95
(B) 85
(C) 65
(D) 76
The graphs of the linear equations 3x-2y=8 and 4x+3y=5 interest at the point P(α, β). What is the value of (2 α - β)?
(A) 3
(B) 4
(C) 6
(D) 5
(A) 2sec θ
(B) 2cosec θ
(C) cosec θ
(D) sec θ
The diagonal of a right angle isosceles triangle is 5 cm. Its area will be
(A) 5 sq.cm
(B) 6.25 sq.cm
(C) 6.50 sq.cm
(D) 12.5 sq.cm
In an isosceles triangle, the measure of each of equal sides is 10 cm and the angle between them is 45°. the area of the triangle is
(A)
(B)
(C)
(D)
From a point in the interior of an equilateral triangle, the length of the perpendiculars to the three sides are 6 cm, 8 cm and 10 cm respectively. The area of the triangle is
(A)
48 cm2
(B)
16√3 cm2
(C)
192√3 cm2
(D)
192 cm2
The area of two equilateral triangles are in the ratio 25 : 36. Their altitudes will be in the ratio :
(A) 36 : 25
(B) 25 : 36
(C) 5 : 6
(D) √5 : √6
The area of a right-angled isosceles triangle having hypotenuse 16√2 cm is
(A)
144 cm2
(B)
128 cm2
(C)
112 cm2
(D)
110 cm2
Get the Examsbook Prep App Today