Question

4. The distance of the points whose co-ordinates are (sin a, – cos a)and (cos a, sin a) is?
(a) 1 unit
(b) 2 units (c) V2 units (d) none of these​

Answer 1

Answer:

√2

Step-by-step explanation:

Using Distance Formula

Answer 2

Answer:

By distance formula

Distance between the given point =[{sina-cosa} ^2+{cosA+cosA}^2] ^1/2

=[0^2+4cos^2A] ^1/2

=2cosA

Hence the correct option is (d)?none of these