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The value of the expression (tan^2 20^0-...

The value of the expression `(tan^2 20^0-sin^2 20^0)/(tan^2 20^0+sin^2 20^0)` is__________

Text Solution

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The correct Answer is:
1
`tan^2 20^@-sin^2 20^@=tan^2 20^@(1-cos^2 20^@)`
`=tan^2 20^@sin^2 20^@`
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