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Video tutorials - I.C.S.E.(CLASS X) Mathematics: Trigonometry (Council for the Indian School Certificate Examinations (CISCE))

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Course:
Subject:   Mathematics
Topic:   Trigonometry

shaalaa.com | Trigonometry Part 1

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Trigonometry Part 1 [00:24:13]
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Trigonometry
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Description

(a) Using Identities to solve/prove simple algebraic trigonometric expressions.

sin2 A + cos2 A = 1

1 + tan2 A = sec2 A

1+cot2 A = cosec2 A; 0< A<900

(b) Trigonometric ratios of complementary angles and direct application:

sin A = cos(90 - A),cos A = sin(90 – A)

tan A = cot (90 – A), cot A = tan (90- A)

sec A = cosec (90 – A), cosec A = sec(90 – A)

(c) Heights and distances: Solving 2-D problems involving angles of elevation and depression using trigonometric tables.

Note: Cases involving more than two right angled triangles excluded.

 

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