Express each of the following in terms of trigonometric ratios of angles between 0∘to 45° :
(i) tan 81∘ + cos 72∘
Answers
Answered by
3
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
1
We have,
tan81∘ +cos72∘
⇒tan(90° −9° )+cos(90° −18° )
⇒cot(9°)+sin(18° )
Hence, this is the answer.
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