Question

show that
Cot ²60 + Sin²45 +sin² 30+ cos²90=13/12
​

Answer 1

Step-by-step explanation:

$(1 \div \sqrt{3) {}^{2} } + (1 \div \sqrt{2) {}^{2} } + (1 \div 2) {}^{2} + 0$

= 1/3 + 1/2 + 1/4

= 13/12

Answer 2

Step-by-step explanation:

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