210o
150o
105o
50o
Correct answer is D
Sum of interior angles of any polygon is (2n - 4) right angle; n angles of the Nonagon = 9
Where 3 are equal and 6 other angles = 1110o
(2 x 9 - 4)90o = (18 - 4)90o
14 x 90o = 1260o
9 angles = 1260°; 6 angles = 110o
Remaining 3 angles = 1260o - 1110o = 150o
Size of one of the 3 angles 1503 = 50o
In the diagram, O is the centre of the circle. If < NLM = 74o, < LMN = 39o and < ...
If sin x = 513 and 0o ≤ x ≤ 90o, find the value of (cos x - tan x)...
If f(x)=3x3+4x2+x−8, what is the value of f(-2)?...
PQRS is a cyclic quadrilateral. If ∠QPS = 75°, what is the size of ∠QRS?...
Alfred spent 14 of his money on food, 13 on clothing and save the rest. If...
Find correct to 3 decimal places (10.05 + 15.005) - (0.05 x 2.05)...