Question
Which of the following metals is used for the
manufacture of heating elements provided in electric iron?Solution
Nichrome is the most common domestic heating element and is found in many household products. Commonly, items such as toasters, hair dryers and heaters use nichrome coils to pass electricity and give off heat. Nichrome is made of 80 percent nickel and 20 percent chromium, and its high melting point of 1,400 degrees Celsius.
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 3cm, BC = 5cm then what is BD:CD?
In Fig. if QT ⊥ PR, ∠TQR = 40 ° and ∠SPR = 30 ° , find x and y.    Â
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 9 cm, BC = 12 cm then what is BD:CD?
AB is parallel to DC in a trapezium ABCD. It is given that AB > DC and the diagonals AC and BD intersect at O. If AO=3x-15, OB = x +9, OC =x-5 and OD = ...
What will be inradius of a right angle triangle whose base is 3 cm & height is 4 cm ?
In a circle, two chords of lengths p and q subtend the angles of 60° and 90° at the center respectively. Which of the following is correct in this sce...
- Length of a chord in a circle of radius 'r' cm, is 24 cm and distance between chord and centre of the circle is 35 cm. Find the value of (6r - 80).
ABC is a triangle. AB = 5 cm, AC = √41 cm and BC = 8 cm. AD is perpendicular to BC. What is the area (in cm2) of triangle ABD?
In ∆ABC, AB = 5cm, BC = 6cm and AC = 10cm then find out the value of cos A?
ABC is a right angled triangle. ∠BAC = 90o and ∠ACB = 60o. What is the ratio of the circum radius of the triangle to the s...
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