NCERT Class 10 Maths Solutions Chapter - 8 Trigonometry, Ex - 8.1

Ex - 8.1

Question 1.In ABC right angled at B, AB = 24 cm, BC = 7 m. Determine
(i)  sin A, cos A
(ii)  sin C, cos C 

Solution

In ABC by applying Pythagoras theorem 
AC² = AB² + BC²
= (24)² + (7)²
= 576 + 49
= 625
AC =  = 25 cm 




Question 2.


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Question 3.


Solution


Question 4.  Given 15 cot A = 8. Find sin A and sec A

Solution



Question 5.

Solution



Question 6.

Solution


Question 7.


Solution


Question 8.


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Question 9.


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Question 10.


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Question 11.

Solution

Ex-8.2