Question

2sina=1 then the value of (3cot^2a+3) will be

Answer 1

Answer:

given,

$2sina = 1 \\ > sina = \frac{1}{2} \\ > sina = sin30 \\ > a = 30$

now,

$3cot^{2} a + 3 \\ = 3(cota)^{2} + 3 \\ = 3 \times (cot30)^{2} + 3 \\ = 3 \times ( \sqrt{3} )^{2} + 3 \\ = 3 \times 3 + 3 \\ = 9 + 3 \\ = 12$

hope this helps

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