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Class 10 (Old)

Course: Class 10 (Old) > Unit 8

Lesson 5: Trigonometric identities

Intro to Pythagorean trigonometric identities
Converting between trigonometric ratios example: write all ratios in terms of sine
Evaluating expressions using basic trigonometric identities
Trigonometric identity example proof involving sec, sin, and cos
Trigonometric identity example proof involving sin, cos, and tan
Trigonometric identity example proof involving all the six ratios
Trigonometric identities challenge problems

Evaluating expressions using basic trigonometric identities

Which of the following options is equivalent to the given expression?

start fraction, \sec, squared, left parenthesis, x, right parenthesis, minus, tangent, squared, left parenthesis, x, right parenthesis, divided by, \cosec, left parenthesis, x, right parenthesis, end fraction

(Choice A)
tangent, left parenthesis, x, right parenthesis
(Choice B)
sine, left parenthesis, x, right parenthesis
(Choice C)
\cosec, left parenthesis, x, right parenthesis
(Choice D)
cosine, left parenthesis, x, right parenthesis

Stuck?

Class 10 (Old)

Course: Class 10 (Old) > Unit 8

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