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I. 35x² - 46x – 16 = 0 35x² - 56x + 10x – 16 = 0 7x(5x – 8) + 2(5x – 8) = 0 (7x + 2) (5x – 8) = 0 ∴ x = -2/7, 8/5 II. 35y² - 116y + 96 = 0 35y² - 56y - 60y + 96 = 0 7y(5y – 8) – 12(5y – 8) = 0 (7y – 12) (5y – 8) = 0 ∴ y = 12/7, 8/5 Hence, x ≤ y
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...