Math, asked by parvinishrat23, 12 hours ago

sin72 + cosec72 express in terms of ratio of angles between 0 to 45

Answers

Answered by gops2k4

0

Answer:

Step-by-step explanation:

Concept used:

cos(90-∅) = sin∅

sec(90-∅) = cosec∅

Solution:

sin72 + cosec 72

= sin(90-18) + cosec (90-18)

=cos 18 + sec 18

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