Advertisements
Advertisements
प्रश्न
Find angle 'A' if :
Advertisements
उत्तर
From the figure we have
cos A = `(10)/(20)`
cos A = `(1)/(2)`
cos A = cos 60°
A = 60°
APPEARS IN
संबंधित प्रश्न
Find ‘x’, if:
Find the length of AD.
Given: ∠ABC = 60o.
∠DBC = 45o
and BC = 40 cm.
In trapezium ABCD, as shown, AB // DC, AD = DC = BC = 20 cm and A = 60°. Find: distance between AB and DC.
Use the information given to find the length of AB.
In the given figure, AB and EC are parallel to each other. Sides AD and BC are 2 cm each and are perpendicular to AB.
Given that ∠ AED = 60° and ∠ ACD = 45°. Calculate: AB.
In right-angled triangle ABC; ∠ B = 90°. Find the magnitude of angle A, if: AB is √3 times of BC.
Find AB and BC, if:
Find AB and BC, if:
Find AB and BC, if:
The perimeter of a rhombus is 96 cm and obtuse angle of it is 120°. Find the lengths of its diagonals.
