Advertisements
Advertisements
प्रश्न
In a ΔABC, if ∠A = 55°, ∠B = 40°, find ∠C.
Advertisements
उत्तर
Given `∠ A=55^@,∠ B=40^@` then ∠ C=?
We know that
In a ABC sum of all angles of triangle is 180°
i.e, ∠ A+∠ B +∠ C =`180^@`
⇒`55^@+40^@` ∠ C `=180^@`
⇒`95^@+∠ C=180^@`
⇒`∠ C=180^@-95^@`
⇒`∠C=85^@`
APPEARS IN
संबंधित प्रश्न
Can a triangle have All angles more than 60°? Justify your answer in case.
Can a triangle have All angles less than 60° Justify your answer in case.
Is the following statement true and false :
An exterior angle of a triangle is equal to the sum of the two interior opposite angles.
In the given figure, AE bisects ∠CAD and ∠B= ∠C. Prove that AE || BC.
Find the unknown marked angles in the given figure:
In the given figure, show that: ∠a = ∠b + ∠c
(i) If ∠b = 60° and ∠c = 50° ; find ∠a.
(ii) If ∠a = 100° and ∠b = 55° : find ∠c.
(iii) If ∠a = 108° and ∠c = 48° ; find ∠b.
Classify the following triangle according to sides:
The angles of a triangle are in the ratio 2 : 3 : 4. Then the angles are
D is any point on side AC of a ∆ABC with AB = AC. Show that CD < BD.
The sides of a triangle must always be connected so that:
