Q.

The value of the expression  tan2⁡20∘−sin2⁡20∘tan2⁡20∘⋅sin2⁡20∘ is

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answer is 1.

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Detailed Solution

tan2⁡20∘−sin2⁡20∘=tan2⁡20∘1−cos2⁡20∘=tan2⁡20∘sin2⁡20∘
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The value of the expression  tan2⁡20∘−sin2⁡20∘tan2⁡20∘⋅sin2⁡20∘ is