1.

Sin 30° sin 90°+ 2c oso° _tan 30° × tan60°​

Answer»

Answer:

Step-by-step EXPLANATION:

SIN 90 = 1

Sin 30 = \frac{1}{\sqrt{2} }

I am assuming that you mean cos 0.

Cos 0 = 1

Tan 30 = Cot 90 - 30 = Cot 60

Cot 60 = 1/TAN60

1/tan60 x tan60 = 1

So we get,

\frac{1}{\sqrt{2} } x 1 + 2 - 1

= \frac{1}{\sqrt{2} } + 1 = \frac{\sqrt{2}+ 1 }{\sqrt{2} }= \frac{2+\sqrt{2} }{2}


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