Question

Find the value of cosec²30°-sin²-45°-sec²60°​

Answer 1

Here is your answer

${cosec}^{2} 30 - {sin}^{2} 45 - {sec}^{2} 60 \\ \\ but \: cosec30 = 2 \\ sin45 = \frac{1}{ \sqrt{2} } \\ sec60 = 2 \\ \\ put \: the \: values \: in \: question \\ \\ {2}^{2} - { \frac{1}{ \sqrt{2} } }^{2} - {2}^{2} \\ 4 - \frac{1}{2} - 4 \\ = \frac{ - 1}{2}$

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Answer 2

Answer:

-1/2

Step-by-step explanation:

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