Question

Q. 3. If 13 tan 0 = 1, then find the value of sin e-cos? 0.
1
If​

Answer 1

Step-by-step explanation:

Answer

3tanθ=1

⇒tanθ=31

⇒θ=60°

∴sin2θ−cos2θ=sin2θ−cos2θ

                               =(23)2−(21)2

                               =43−41

                               =21

Hence, the answer is 0.5.