Question

If 0 is an acute angle and sin 0 = cos e, find the value of
2 tan2 O + sin2 0 - 1.​

Answer 1

Answer:

Step-by-step explanation:

Given that sinθ=cosθ

⟹  

cosθ

sinθ

​  

=1

⟹tanθ=1

⟹θ=45  

0

 

Therefore, 2tan  

2

θ+sin  

2

θ−1=2tan  

2

45+sin  

2

45−1

=2(1)  

2

+(  

2

​  

 

1

​  

)  

2

−1

=2+  

2

1

​  

−1=  

2

1

​  

+1=  

2

3

​ hope it helps