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4 years ago from now, let the ages of the father and the son be '19x' years and '10x' years, respectively Age of the father, 2 years hence from now = 19x + 4 + 2 = (19x + 6) years Age of the son, 2 years ago from now = 10x + 4 - 2 = (10x + 2) years According to the question, 19x + 6 = (10x + 2) X 2 Or, 19x + 6 = 20x + 4 Or, x = 2 Therefore, present age of the son = 10x + 4 = 10 X 2 + 4 = 24 years
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...