MHT CET 2023 Mathematics question
Not in JEE syllabus
In a triangle ABC, , , are in A.P. and lengths of two larger sides are 10 units, 9 units respectively, then the length (in units) of the third side is
Answer: (A)
Solution
Angles in A.P. give , and with we get . Since is the middle angle, side opposite to it is the middle side: , and the largest side is , with the third side the smallest. Use the cosine rule at : . Taking the two other
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account