Question

csc square 70 - 1 - 1 - tan square 20​

Answer 1

The final answer is: $\csc^2 70 - \tan^2 20 - 2$

Step-by-step explanation:

$\ Given \ value:\\\\\csc^2 70 - 1 -1 -\tan^2 20 \\\\\ Solution:\\\\ \csc \theta = \ cosec \theta \\\\\csc^2 70 - 1 -1 -\tan^2 20 \\\\\rightarrow \frac{1}{\sin^2 70} - 1 -1 -\frac{\sin^2 20}{\cos^2 20} \\\\\rightarrow \frac{1}{\sin^2 70} -\frac{\sin^2 20}{\cos^2 20} -2 \\\\\rightarrow \csc^2 70 - \tan^2 20 - 2$

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• Simplify: https://brainly.in/question/8112701