Ex 8 4 class 10 ncert
Rating:
6,2/10
188
reviews

In this chapter, students will study some ratios of the sides of a right triangle with respect to its acute angles, called trigonometric ratios of the angle. Determine the values of sin P, cos P and tan P. The solution is thus checked for its correctness. The solution is thus checked for its correctness. If where 4A is an acute angle, find the value of A. Area of Also , Area of.

The solution is thus checked for its correctness. Find th e length of the string of each phone. Refer to our Textbook Solutions any time, while doing your homework or while preparing for the exam. Let the three girls Reshma, Salma and Mandip are standing on the circle of radius 5 cm at points B, A and C respectively. Defining the six rations sine, cosine, tangent, secant.

However, these ratios can be extended to other angles also. Get 100 percent accurate for Class 10 Maths Chapter 8 Introduction to Trigonometry solved by expert Maths teachers. Write the other trigonometric ratios of A in terms of Ans. If where 2A is an acute angle, find the value of A. Q6: Show that the line segments joining the mid-points of the opposite sides of a quadrilateral bisect each other.

Students will also learn to define the trigonometric ratios for angles of measure 0° and 90°. In right , we have. Trigonometric Ratios, Trigonometric Ratios of Some Specific Angles, Trigonometric Ratios of Complementary Angles and Trigonometric Identities are the main topics learnt from this chapter. They will calculate trigonometric ratios for some specific angles and establish some identities involving these ratios, called trigonometric identities. Find the area of each of the five scoring regions. Find the radius of the circle which has a circumference equal to the sum of the circumferences of the two circles. They will restrict the discussion to acute angles only.

Description, history and identities related to Trigonometry is given below. Trigonometry is used in astronomy to determine the position and the path of celestial objects. We know that the perpendicular from the centre of a circle to a chord, bisects the chord. The solution is thus checked for its correctness. This concept was first used by in Aryabhatiyam in 500 A.

The solution is thus checked for its correctness. Relationship between the trigonometric ratios are: Historical Facts! By converse of mid-point theorem, we know that a line drawn through the mid-point of any side of a triangle and parallel to another side, bisects the third side. Astronomers use it to find the distance of the stars and planets from the Earth. The wheels of a car are of diameter 80 cm each. The diameter of the region representing Gold score is 21 cm and each of the other bands is 10. When the Aryabhatiyam was translated into Arabic, the word Jiva was retained.

The solution is thus checked for its correctness. The following relationships exist between different trigonometric ratios: The trigonometric identities are: Two angles, whose sum is 90 degree, are called complementary angles. . A very simple language, explanation of basic concepts in a detailed manner and pictorial representations make this chapter very engaging and interesting to learn. Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Introduction to Trigonometry. State whether the following statements are true or false. Register for our free webinar class with best mathematics tutor in India.

Three boys Ankur, Syed and David are sitting at equal distance on its boundary each having a toy telephone in his hands to talk each other. Reshma throws a ball to Salma, Salma to Mandip, Mandip to Reshma. The solution is thus checked for its correctness. Detailed answers of all the questions in Chapter 8 Maths Class 10 Introduction to Trigonometry Exercise 8. If the distance between Reshma and Salma and between Salma and Mandip is 6 m each, what is the distance between Reshma and Mandip? In given figure, find tan P — cot R. Captain of a ship uses it to find the direction and the distance of islands and light houses from the sea.