(cosec A-sin A)(sec A-cos A)=1/tan A+cot A
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Step-by-step explanation:
FORMULAE USED ARE -
SIN²A+COS²A = 1
SIN²A = 1– COS²A
COS²A = 1– SIN²A
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Step-by-step explanation:
is a disease caused by the deficiency and
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