Question
An equilateral triangle ABC is inscribed in a circle
with centre O. D is a point on the minor are BC and ∠ CBD = 40°. Find the measure of ∠ BCD.Solution
∠ABC = ∠ACB = ∠BAC = 60° [∵ ΔABC is an equilateral triangle] Also, ∠BAC + ∠BDC = 180° ⇒ 60° + ∠BDC = 180° ⇒ ∠BDC = 180° - 60° = 120° Also, ∠CBD + ∠BDC + ∠BCD = 180° ⇒ 40° + 120° + ∠BCD = 180° ⇒ ∠BCD = 180° - 40° - 120° = 20° ∴ The value of ∠BCD is 20°
Find the next term / numbers in the given series?
54, 46, 40, 36, ?
- Study the given pattern carefully and select the number that can replace the question mark [?] in it.
First row: 11, 7, 1274
Second row: 9, ... Study the given pattern carefully and select the number that can replace the question mark (?) in it.
First row: 14, 12, 108
Second row:...
In the following expression find the missing term:
A series is given with two terms missing. Choose the correct alternatives from the given ones that will come in the place of blanks respectively and com...
UDGO : FWTL : : MXRC : ?
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
What will come in the place of question mark?
Find the missing number.
E/M ∶ 20/156: : G/O: ?
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