Question

see the attachment please solutions ​

Answer 1

Answer:

60 degrees

Explanation:

Equal magnitude therefore lets say the magnitude is x,

R=(P^2+Q^2+2PQcos angle)^1/2

4x^2=x^2+x^2+2x^2 cos angle

x^2 - gets cancelled out so

4 = 2 cos angle

cos angle = 1/2

angle = cos^-1(1/2)

angle = 60 degrees

Answer 2

Answer:

see the attachment solutions