help@askiitians.com

+91-87964 74404

Grade 99 grade maths

In a parallelogram KITE , angleKIT = 75, KA is perpendicular to IT, KA and EI intersect at B where A is a point in IT .If EB=2KI then find the measure of angle KBE

Manju

7 Years agoGrade 9

1 Answer

Arun

Approved Tutor Answer7 Years ago

KA ^ IT
Ð I = 75° Ð AKI = 15°
KE || IT
\ ÐAKE = 90°
Let D be the mid point of EB
Since in a right angled D, mid point of the hypotenuse is
equidistant from the vertices
\ DK = DB = DE Let ÐABI = q= ÐDKB = q
17
In DDKB, ÐBDK = 180° – 2q
In DIKD
IK = KD
\ ÐKID = ÐKDI = 180–2q
In DIKD, 180° – 2q+ 180° – 2q+ q+ 15° = 180°
\ 180° + 15° = 4q– q
195° = 3q
65° = q
ÐABI = 65°

What are the differences between similar triangles and congruent triangles?

9 grade maths

1 Answer Available

Last Activity: 11 Months ago

What are Armstrong numbers?

9 grade maths

1 Answer Available

Last Activity: 11 Months ago

All real numbers are rational numbers.
A) True
B) False

9 grade maths

1 Answer Available

Last Activity: 11 Months ago

The L.C.M of the smallest 2 digit composite number and the smallest composite number is:
(a) 12
(b) 4
(c) 20
(d) 44

9 grade maths

1 Answer Available

Last Activity: 11 Months ago

Are all natural numbers also whole numbers?

9 grade maths

1 Answer Available

Last Activity: 11 Months ago

View all Questions