Math, asked by kpsinghfuturetech198, 1 month ago

taking theta = 30 degree ,cos 2 theta

Answers

Answered by priyampalsinghthb
0

Answer:

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Answered by sreenidhi3124
0

Answer:

cos2θ=

1+tan

2

θ

1−tan

2

θ

cos2(30

)=

1+tan

2

30

1−tan

2

30

cos60

=

1+tan

2

30

1−tan

2

30

2

1

=

1+(

3

1

)

2

1−(

3

1

)

2

2

1

=

3+1

3−1

2

1

=

4

2

2

1

=

2

1

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