Find the value of sec square 20-cot square 70÷sin square 70+sin square 20
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sec square 20-cot square 70÷sin square 70+sin square 20
= sec square 20-tan square (90-70)÷sin square 70+cos square (90-20)
=1/1
=1
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Step-by-step explanation:
Answer is 1
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