Question

Which of the following equation has no solution?

Options

• secθ = 23

• cosθ = `sqrt(2)`

• tanθ = 2019

• sinθ = `-1/5` 

Answer 1

`bb(cosθ = sqrt(2))`

Explanation:

cos θ = `sqrt(2)` has no solution, since value of cos θ lies in [–1, 1]