Evaluate:3cos18∘sin72∘−cosec58∘sec32∘

3cos18∘sin(90−18)∘−cosec58∘sec(90−58)∘=3cos18∘cos18∘−cosec58∘cosec58∘=3−1=2

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Evaluate: 3 {sin 72^}{cos 18^}- {sec 32^}{cosec58^}

Question

Evaluate:
$3 \frac{s in 7 2 ^{\circ}}{cos 1 8 ^{\circ}} - \frac{sec 3 2 ^{\circ}}{cosec 5 8 ^{\circ}}$

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Evaluate:

3 \frac{s in 7 2 ^{\circ}}{cos 1 8 ^{\circ}} - \frac{sec 3 2 ^{\circ}}{cosec 5 8 ^{\circ}}

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13 mins ago

3 \frac{s in ( 90 - 18 ) ^{\circ}}{cos 1 8 ^{\circ}} - \frac{sec ( 90 - 58 ) ^{\circ}}{cosec 5 8 ^{\circ}}

= 3 \frac{cos 1 8 ^{\circ}}{cos 1 8 ^{\circ}} - \frac{cosec 5 8 ^{\circ}}{cosec 5 8 ^{\circ}} = 3 - 1 = 2

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Question Text	Evaluate: $3 \frac{s in 7 2 ^{\circ}}{cos 1 8 ^{\circ}} - \frac{sec 3 2 ^{\circ}}{cosec 5 8 ^{\circ}}$
Answer Type	Text solution:1
Upvotes	150