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#### The value of is : Option: 1 Option: 2 Option: 3 Option: 4 Trigonometric Identities -

Trigonometric Identities-

These identities are the equations that hold true regardless of the angle being chosen. -

Allied Angles (Part 1) -

Allied Angles (Part 1)

Two angles or numbers are called allied iff their sum or difference is a multiple of π/2

• sin (900 - θ) = cos (θ)

• cos (900 - θ) = sin (θ)

• tan (900 - θ) = cot (θ)

• csc (900 - θ) = sec (θ)

• sec (900 - θ) = csc (θ)

• cot (900 - θ) = tan (θ)

• sin (900 + θ) = cos (θ)

• cos (900 + θ) = - sin (θ)

• tan (900 + θ) = - cot (θ)

• csc (900 + θ) = sec (θ)

• sec (900 + θ) = - csc (θ)

• cot (900 + θ) = - tan (θ)

- #### If and  then is equal to ________. Option: 1 Option: 2 Option: 3 Option: 4 Trigonometric Identities -

Trigonometric Identities-

These identities are the equations that hold true regardless of the angle being chosen. -

Double Angle Formula and Reduction Formula -

Double Angle Formula and Reduction Formula  - Correct Option (2)

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• Faculty Support #### Two poles, of length a metres and of length metres are erected at the same horizontal level with bases at . If and , then : Option: 1 Option: 2 Option: 3 Option: 4  ## JEE Main high-scoring chapters and topics

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#### The domain of the function is :Option: 1 Option: 2 Option: 3 Option: 4 Domain

..........(1)

.......(2)

From (1) and (2)

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• Faculty Support #### A vertical pole fixed to the horizontal ground is divided in the ratio by a mark on it with lower part shorter than the upper part. If the two parts subtend equal angles at a point on the ground away from the base of the pole, then the height of the pole (in meters) is :Option: 1 Option: 2 Option: 3 Option: 4  option (3)

#### is a root of the equation :Option: 1 Option: 2 Option: 3 Option: 4 option (3) 