Math, asked by ItzImperceptible, 4 months ago

Express each of the following in terms of trigonometric ratios of angles between 0∘to 45° :

(i) tan 81∘ + cos 72∘​

Answers

Answered by Anonymous
3

⭐Answer⭐

Step-by-step explanation:

❥︎We have,

tan 81° +cos 72∘

⇒ tan ( 90⁰−9⁰ ) + cos ( 90⁰ −18⁰ )

⇒ cot ( 9⁰ ) + sin ( 18⁰ )

Idi miku sahayam cestundani nenu asistunnanu. . .

Answered by Anonymous
1

We have,

tan81∘ +cos72∘

⇒tan(90° −9° )+cos(90° −18° )

⇒cot(9°)+sin(18° )

Hence, this is the answer.

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