sinθ=cosθ then, θ =?

sinθ=cosθ then, θ =?

A θ=30⁰

B θ=45⁰

C θ=60⁰

D θ=90⁰

Solution

Correct Answer: Option B

এখানে,
θ =45⁰ হলে
Sinθ=45⁰ =1/√2
এবং
Cosθ=Cos45⁰=1/√2
∴ θ=45⁰ হলে Sinθ=Cosθ