Question
If in triangle ABC, If side AB=6√ 3, AC=12 and BC=6,
then angle B equals:Solution
In a triangle, if square of one side is equal to the sum of the squares of the other two sides, then the angle opposite the first side is a right angle.  In ΔABC AB = 6√3 cm; AC = 12 cm; BC = 6 cm AB2 = 108 cm2; AC2 = 144 cm2; BC2 = 36 cm2 AB2 + BC2 = (108 + 36) cm2 = 144 cm2 ⇒ AC2 = AB2 +BC2 Pythagoras theorem satisfied. Thus, ∠ABC = 90°
2660.03 ÷ 94.98 x 59.9 = ? + 20.32
What is the smallest integer that should be subtracted from 653 to make it divisible by both 23 and 27?
( 1000)1/3  × 10.11 × 4.97 ÷ 10.32 =? – 15.022
[(2/3 of 899.79) + 25% of 500.21] × (√195.77 + 30.03% of 399.79) = ?
15.232 + 19.98% of 539.99 = ? × 8.99
(29.98% of 9840) + ? + (19.899% of 8490) = 7560
 (1782 ÷ 11.98) ÷ 2.92 × 35.89 + 25% of 541 – 67% of 1299 = ?
What approximate value will come in place of question (?) in the following given expression? You are not expected to calculate the exact value.
...What approximate value will replace the question mark (?) in the following?
39.99...
What approximate value will come in place of question (?) in the following given expression? You are not expected to calculate the exact value.
...
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