Question

If tan theta = 1 and theta does not lie in first quadrant then sin theta

Answer 1

Answer:

Given θ lies in first quadrant⟹cosθ>0

tanθ=

5

1

As we know that

sec

2

θ=1+tan

2

θ=1+(

5

1

)

2

=1+

5

1

=

5

6

⟹secθ=

5

6

cosθ=

secθ

1

=

5

6

1

=

6

5