Topics
Trigonometry
topic badge
India
Class X

Find angles in right-angled triangles

Lesson
Practice

Interactive practice questions

Find the value of $x$x to the nearest degree.

 

A right-angled triangle with vertices labeled A, B, and C. The right angle is at vertex A located at the bottom left. An angle marked as 'x' is located at vertex B. Adjacent to the angle labeled as x is side AB with the length of 5 units. Opposite to the angle labeled as x is side AC with the length of 12 units. Side BC is the hypotenuse and is not labeled with a length. 
Easy
1min

Use the tangent ratio to find the size of the angle marked $x$x, correct to the nearest degree.

Easy
1min

Find the value of $x$x to the nearest degree.

Easy
1min

Find the value of $x$x to the nearest degree.

Easy
1min
Sign up to access Practice Questions
Get full access to our content with a Mathspace account
Book a Demo
Sign up for free

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.

10.T.IT.2

Trigonometric Identities: Proof and applications of the identity sin^2 A + cos^2 A = 1. Only simple identities to be given. Trigonometric ratios of complementary angles.

What is Mathspace

About Mathspace