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After removal of 81 litres of mixture, Let the initial quantity of water be '100a' litres. Initial quantity of chlorine = 0.35 X 100a = '35a' litres ATQ, 100a - 35a = 26 Or, 65a = 26 Or, 'a' = (26/65) = 0.4 Therefore, final quantity of water = 100a + 15 = 100 X 0.4 + 15 = 40 + 15 = 55 litres
Find the value of sin265o + sin225o + cos235o + cos255o.
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What is the value of cos75°?
What is the value of cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin [(180 – 13θ)/2]?
Simplify the following trigonometric expression:
12 cos 68o cosec 22o - 3 cot 72o cot 18o
A person is standing at a point 120 meters away from a tower. The angle of elevation to the top of the tower is 60°. If the height of the tower increas...
If sin3A = cos(5A-30°), then what is the value of A? Given that 3A is an acute angle.
If sinAo = (√3/2), then find the value of (sin245o + cos230o) × A ÷ 5 given that 0 < A < 90...