Question

Express tan 18°+cosec27° in terms of trigonometric ratios of angle between 45° & 90°.

Answer 1

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Answer 2

⭐⭐⭐⭐⭐ ANSWER ⭐⭐⭐⭐⭐

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❄❄❄❄ REMEMBER ❄❄❄❄

➡ sin (90°-x) = cos x.

➡ cos (90°-x) = sin x.

➡ tan (90°-x) = cot x.

➡ cot (90°-x) = tan x.

➡ sec (90°-x) = cosec x.

➡ cosec (90°-x) = sec x.

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❄❄❄❄ SOLUTION ❄❄❄❄


tan 18° + cosec 27°

= tan (90°-72°) + cosec (90°-63°)

= cot 72° + sec 63° [Ans.]

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⭐⭐⭐ ALWAYS BE BRAINLY ⭐⭐⭐

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