Math, asked by hitenshah951973, 10 months ago

The value of 2tan-1 1/4​

Answers

Answered by nprakash28
0

Answer:

=1/2 ÷ 17/16

Step-by-step explanation:

sin (2tan - 1  1÷4) = sin20

writing sin20 in term of tanθ

= 2tanθ ÷ 1 + tan²θ

= 2 × 1/4 ÷ 1 + (1/4)²

= 1/2 ÷ 1 + 1/16

= 1/2 ÷ 16+1/16

= 1/2 ÷ 17/16

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