Advertisements
Advertisements
Question
Find angle 'x' if :
Advertisements
Solution
The above figure we have
tan 60° = `(30)/"AD"`
`sqrt(3) = (30)/"AD"`
AD = `(30)/(sqrt(3)`
Again
sin x = `"AD"/(20)`
AD = 20 sin x
Now
20 sin x = `(30)/sqrt(3)`
sin x = `(30)/(20sqrt(3)`
sin x = `sqrt(3)/(2)`
sin x = sin 60°
x = 60°
APPEARS IN
RELATED QUESTIONS
Find ‘x’, if:
Find 'x', if :
Find 'x', if:
Find angle 'A' if :
Find angle 'A' if :
In trapezium ABCD, as shown, AB // DC, AD = DC = BC = 20 cm and A = 60°. Find: distance between AB and DC.
Find the length of AB.
In the given figure, ∠B = 60°, AB = 16 cm and BC = 23 cm,
Calculate:
- BE
- AC
A kite is attached to a 100 m long string. Find the greatest height reached by the kite when its string makes an angles of 60° with the level ground.
The perimeter of a rhombus is 96 cm and obtuse angle of it is 120°. Find the lengths of its diagonals.
