Question
Wilting of seedlings (also called kresek) is a damaging
symptom of which disease in rice?Solution
Wilting of seedlings (also called kresek) is a damaging symptom of Bacterial leaf blight (BLB) disease in rice. Bacterial blight is one of the most serious diseases of rice. The earlier the disease occurs, the higher the yield loss.
Find the maximum value of 18 sin A + 7 cos A.
- If sin 2a = (3/2), then find the value of (sin a + cos a).
- If X = 15°, find the value of:
sin²(3X) + cos²(4X) - tan²(2X) cot 13Ëš Â
 cot 14˚  ...If 2x = cosec @ and 4/x = cot @ then the value of 2(x ² - 1/x ² ) is
Solve for 0° ≤ θ ≤ 360°:
2 sin²θ + 3 sinθ − 2 = 0
- Simplify the following trigonometric expression:
sin 2A + sin 2B Find the value of the given expression.
2 × (sec 60° – sin 30°)
If cos θ + sin θ = m, sec θ + cosec θ = n then n(m 2 – 1) is equal to?
if x sin 45 Ëš Â = y cosec 30 Ëš Â then find the value ofÂ