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Important Questions on Trigonometric Functions

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Mathematics>Trigonometry>Trigonometric Functions>Angles
Consider a triangular plot ABC with sides AB=7 m, BC=5 m and CA=6 m. A vertical lamp-post at the mid-point D of AC subtends an angle 30° at B. The height (in m) of the lamp-post is:
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Mathematics>Trigonometry>Trigonometric Functions>Angles
A bird is sitting on the top of a vertical pole 20 m high and its elevation from a point O on the ground is 45°. It flies off horizontally straight away from the point O. After one second, the elevation of the bird from O is reduced to 30°. Then the speed (in m/s) of the bird is 
HARD
Mathematics>Trigonometry>Trigonometric Functions>Angles
If the angle of elevation of a cloud from a point P which is 25m above a lake be 30° and the angle of depression of reflection of the could in the lake from P be 60°, then the height of the cloud (in meters) from the surface of the lake is :
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Mathematics>Trigonometry>Trigonometric Functions>Angles
A body accelerates from rest with a uniform acceleration a for a time t. The uncertainty in 'a' is 8% and the uncertainty in 't' is 4%. The uncertainty in the speed is
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Mathematics>Trigonometry>Trigonometric Functions>Angles
Taking into account of the significant figures, what is the value of 9.99 m–0.0099 m?
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Mathematics>Trigonometry>Trigonometric Functions>Angles
The mean deviation from the mean of the set of observations, -1, 0, 4 is
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Mathematics>Trigonometry>Trigonometric Functions>Angles
The area of a square is 5.29 cm2. The area of 7 such squares taking into account the significant figures is:
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Mathematics>Trigonometry>Trigonometric Functions>Angles

Identify the floral unit 'I' in the given floral diagram.

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Mathematics>Trigonometry>Trigonometric Functions>Angles
Define the term floral diagram. Give the floral diagram of Allium cepa.
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Mathematics>Trigonometry>Trigonometric Functions>Angles
A floral diagram represents flower in
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Mathematics>Trigonometry>Trigonometric Functions>Angles
What are the limitations of floral formula?
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Mathematics>Trigonometry>Trigonometric Functions>Angles
Draw a well-labelled floral diagram of any flower to show the position and arrangement of different structures.
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Mathematics>Trigonometry>Trigonometric Functions>Angles
Find the correct match.
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Mathematics>Trigonometry>Trigonometric Functions>Angles
What are the limitations of floral formula?
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Mathematics>Trigonometry>Trigonometric Functions>Angles
What is the botanical name of the plant source of colchicine?
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Mathematics>Trigonometry>Trigonometric Functions>Angles
Define the term floral diagram. Give the floral diagram of Allium cepa.
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Mathematics>Trigonometry>Trigonometric Functions>Angles
Floral features are chiefly used in identification of the angiosperms because:
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Mathematics>Trigonometry>Trigonometric Functions>Angles

What does the following floral formula represent?

K5C5A5G(2)

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Mathematics>Trigonometry>Trigonometric Functions>Angles
Write floral formula for a flower which, is bisexual; actinomorphic; sepals five, twisted aestivation, petals five; valvate aestivation; stamens six; ovary tricarpellary, syncarpous, superior, trilocular with axile placentation.
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Mathematics>Trigonometry>Trigonometric Functions>Angles

Given below is the floral formula of a well-known plant. Draw floral diagram from this formula.

 ⊕  Question ImageK5C5A5+5G5