Question
Which of the following diseases is associated with
invention of Bordeaux mixture?Solution
The Bordeaux mixture fungicide (copper sulfate and lime), discovered accidentally in 1882, was used successfully against grapes downy mildew.
If cos 2x = 1/2, then the value of x:
The value of sec2 45˚ + 2 tan 135˚ is –
Solve for x in the interval [0, 2π]: 2 sin²x + 3 sinx - 2 = 0.
Simplify (cos20°+sin 20°) /(cos20°-sin20°)
Find the simplified value of:
The angle of depression of two ships from the top of a light house are 45º and 30º. if the ships are 120m on the opposite sides of lig...
- Simplify the following trigonometric expression:
13cos 63 o cosec 27 o  - 5cot 56 o cot 34 o The angle of depression of vertex of a regular hexagon lying in a horizontal plane, form the top of a tower of height 135 m located at the centre of the...
Find the value of sin(θ) if 2sinθ = tanθ, for 0 < θ < 90°.
The Value of (sin38Ëš)/(cos52Ëš) + (cos12Ëš)/(sin78Ëš) - 4cos²60Ëš is
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