Question
If 4cos2x - 3 = 0, and (0° > x > 90°),
then find the value of 'x'.Solution
Given, 4cos2x - 3 = 0
Or, 4cos2x = 3
So, cos2x = (3/4)
Or, cosx = (√3/2)
Or, cosx = cos 30o
So, x = 30o
In a rectangle, length : breadth = 4 : 3. What is the value of length : diagonal?
In the figure BD = CD = AC, ∠ABC = 27 ° , ∠ACD = y. Find value of x.
In the given Figure, Find  angle BCD. If AB is a diameter & AB is parallel to CD.
The sides of a triangle are 10 cm, 17 cm, and 21 cm. Find the area of the triangle using Heron’s formula.
The radius of the incircle of a triangle is 3 cm. if the area of the triangle is 12 cm 2 , then its perimeter is?
Angles of a triangle are in the ratio 1 : 2 : 3. Find the measure of the largest angle.
If y = 5x + c passes through point A(5, 2), what is the value of c?
...A triangular field has sides measuring 50 m, 78 m, and 112 m. Determine the height of the field corresponding to the longest side and also find the area...
Find the area of triangle having sides 8 m, 9 m, and 13 m.
If I is the incentre of ΔABC , if ∠BAC = 450 , then what is the measure of ∠BIC?
Relevant for Exams:
