Question

Which expression is not equal to 1?

sin θ csc θ

cos θ sec θ

tan θ cot θ

sin θ cos θ

Answer 1

sin θ cos C

Explanation:

Suppose, θ=30°

Suppose,

sin θ cos θ=1

⇒sin30°cos30°=1

⇒
`(1)/(2)`×
`(√(3\\) )/(2)`=1

⇒
`(√(3) )/(4)`≠1

Answer 2

Hopes this helps if it is wrong I am so sorry:

Answer: sin 0 cos 0