Advertisements
Advertisements
Question
Find AD, if:
Advertisements
Solution
In ΔBCA
∠ABC = ∠BAC = x
∠ACD = ∠BAC + ∠ABC ...[Exterior angle equal to two int. opp. angle]
60° = x + x
60° = 2x
x = 30°
In ΔADB
sin B = `("AD")/("AB")`
sin 30° = `("AD")/(100)`
`(1)/(2) = ("AD")/(100)`
AD = 50 m
APPEARS IN
RELATED QUESTIONS
Find angle 'A' if :
Find angle 'x' if :
Find the length of AD.
Given: ∠ABC = 60o.
∠DBC = 45o
and BC = 40 cm.
Find the lengths of diagonals AC and BD. Given AB = 60 cm and ∠ BAD = 60°.
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 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: AC
Find: BC
Find AB and BC, if:
Find PQ, if AB = 150 m, ∠P = 30° and ∠Q = 45°.
.
