Question

sec^2 18° - cosec^2 72°​

Answer 1

Step-by-step explanation:

sec^2 18°- cosec^2 72°

sec^2 18° - cosec^2 (90-18)

0

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Answer 2

given.

$\sf\green{sec^2 18° - cosec^2 72°}$

To find value..

$\huge\sf\underline{\underline{\</u></strong><strong><u>g</u></strong><strong><u>r</u></strong><strong><u>e</u></strong><strong><u>e</u></strong><strong><u>n</u></strong><strong><u>{</u></strong><strong><u>solu</u></strong><strong><u>tion</u></strong><strong><u>}}}$

➠$\sf\green{sec^2 18° - cosec^2 72°}$

➠$\sf\green{cosec^2( 90°- 72°) - cosec^2 72°}$

➠$\sf\green{cosec^2 72° - cosec^2. 72°= 0}$

$\huge\sf\underline{\underline{\red{AnsWeR}}}$---0