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Aug

Calculus

…

Posted in: Calculus,

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Aug

Index of Height & Distance

01. Angle of Elevation

02. Angle of Depression

03. Examples of Heig…

Posted in: Index of Height & Distance,

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Aug

Examples of Height & Distance

(1) The shadow of a building is 30m long when the angle of elevation of the sun is 60^o. Find the height of the building.

Soln. Let AB be the building and AC be its shadow.

Posted in: Examples of Height & Distance,

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Aug

Angle of Depression

☼ Angle of Depression : Suppose a man from a point P looks down at an object B, placed below the level of his eye, then the angle which the line of sight makes with the horizontal through P, is called the angle of depression…

Posted in: Angle of Depression,

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Aug

Height & Distance

☼ Angle of Elevation : Suppose a man from a point P looks up at an object B, placed above the level of his eye. Then, the angle which the line of sight makes with the horizontal through P, is called the angle of elevation of B a…

Posted in: Height & Distance,

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Aug

Index of T-Ratios & Identities

01. Introduction

02. Some Basic Concepts

03. Level Functions

Posted in: Index of T-Ratios & Identities,

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Aug

Examples 16 to 18 of T-Ratios & Identities

(16) If sinθ = $\frac{3}{5}$ , find the values of

sin 2θ, cos 2θ, tan 2θ, sin 3θ and cos 3θ.

Soln. cosθ …

Posted in: Examples 16 to 18 of T-Ratios & Identities,

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11

Aug

Examples 11 to 15 of T-Ratios & Identities
(11) If a² + b² + c² = r² and a = r cos A sin B, b = r sin A sin B, find the value of c.

Soln. a² + b² = r² cos² A sin² …

Posted in: Examples 11 to 15 of T-Ratios & Identities,

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11

Aug

Examples 6 to 10 of T-Ratios & Identities
(6) Evaluate : $sin{\frac{\pi}{6}}+cos{\frac{\pi}{3}}-{cot}^3{\frac{\pi}{4}}+cos{e}c^2\f... </p> <div class=$

Posted in: Examples 6 to 10 of T-Ratios & Identities,

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11

Aug

Examples 1 to 5 of T-Ratios & Identities
(1) Convert $\frac{7\pi}{6}$ radians into degrees.

Soln. $\pi... </p> <div class=$

Posted in: Examples 1 to 5 of T-Ratios & Identities,

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