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Sin (2x + 50) o = cos(2y - 50) o
We know that, sin Ao = cos (90 - A) o
Or, cos {90o - (2x + 50) o} = cos(2y - 50) o
Or, 90 - (2x + 50) = 2y - 50
Or, 90 - 2x - 50 = 2y - 50
Or, 2x + 2y = 90
Or, 2 X (x + y) = 90
So, x + y = (90/2) = 45o
Therefore, tan (x + y) = tan 45o = 1
47.78% of 499.98 + (19.89 × 7.76) = √? × 49.84
15.1 + 3.97 – 9.07 × 1.96 = √?
59.978% of 800.315 - 229.95 = ? - 24.95% of 200.15
50.098% of 7000.072 ÷ 69.6969 + 75.093 of 15.98 = ? × 4.983
Monthly income of A is Rs. 66000 out of which he spent 18%, 11% and 21% of his total income in rent, medicine and transportation, respectively. Find his...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
?2 - 12.5% of 647.99 = 24.98% × 363.97 + 5% of 1059.98
181.87 ÷ 13.89 X 8.13 + ? = 11.852
2 (1/4)% of 7999.78 + {49.77% of 899.71} + √144.14 - 20% of 1499.83 = ?
115.98 + 109.01 + (√575 - 17) X 20.09 - 204.89 + 38.03 = ?