Question

P.Q=|P×Q| angle between p and Q ???​

Answer 1

⭐《ANSWER》

Actually welcome to the concept of the VECTORS

Basically we know that , there two types of products

that are

SCALAR PRODUCT AND VECTOR ( CROSS) PRODUCT

since we know ,

A.B = A.B COS ⊙ -》 SCALAR PRODUCT

A × B = A.B SIN ⊙ -》 VECTOR PRODUCT

so applying this we get as ,

P.Q = | P × Q |

P.Q COS ⊙ = P.Q SIN ⊙

COS ⊙ = SIN ⊙

since , at 45° , Cos and sine values are same in the first quadrant

thus

↗Angle ⊙ = 45°