If π‘ŽΜ‚ and 𝑏̂ are unit vectors, then prove that |π‘ŽΜ‚ + 𝑏̂| = 2π‘π‘œπ‘  0/2 , where πœƒ is the angle between them.

CBSE Sample Question Paper, Class 12 Mathematics Term 2 Question - If π‘ŽΜ‚ and 𝑏̂ are unit vectors, then prove that |π‘ŽΜ‚ + 𝑏̂| = 2π‘π‘œπ‘  0/2 , where πœƒ is the angle between them.

If π‘ŽΜ‚ and 𝑏̂ are unit vectors, then prove that
|π‘ŽΜ‚ + 𝑏̂| = 2π‘π‘œπ‘  0/2 , where πœƒ is the angle between them.

Answer.
If π‘ŽΜ‚ and 𝑏̂ are unit vectors, then prove that