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Trigonometry
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India
Class X

Name sides and angles in a right-angled triangle

Lesson
Practice

Interactive practice questions

Which of the following is the hypotenuse of the triangle shown?

A right-angled $\triangle ACB$△ACB has its right angle at vertex C, depicted as a small blue square. Vertex A is positioned at the top right, directly above vertex C, and vertex B is located to the left of vertex C.

$BC$BC

A

$AB$AB

B

$AC$AC

C
Easy
< 1min

Which of the following is the hypotenuse of the triangle shown?

Easy
< 1min

Which of the following is the opposite side to angle $\theta$θ?

Easy
< 1min

Which of the following is the adjacent side to angle $\alpha$α?

Easy
< 1min
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Outcomes

10.T.IT.1

Trigonometric ratios of an acute angle of a right-angled triangle. Proof of their existence (well defined); motivate the ratios, whichever are defined at 0° and 90°. Values (with proofs) of the trigonometric ratios of 30°, 45° and 60°. Relationships between the ratios.

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