Question

If cosθ=1/2,sinϕ=1/2 then the value of θ+ϕ is

Answer 1

Answer:

90° is the correct answer

Answer 2

Answer:

cosθ=1/2

or, cosθ = cos 60

or, θ = 60

Again

sinϕ=1/2

or, sinϕ=sin 30

or, ϕ= 30

Therefore,

θ + ϕ = 60 + 30 = 90