Find the value of tan(sin^-1(½)) a. sqr3 C. sqr3/3 B. -sqr3 D. -Sqr3/3

Mathematics

1 answer:

laiz [17]3 years ago

4 0

Answer:

Step-by-step explanation:

Given

tan( $sin^{-1}$ ( $\frac{1}{2}$ ))

Evaluate

$sin^{-1}$ ( $\frac{1}{2}$ ) = 30°, then

tan30° = $\frac{1}{\sqrt{3} }$ ← rationalise the denominator

= $\frac{1}{\sqrt{3} }$ × $\frac{\sqrt{3} }{\sqrt{3} }$ = $\frac{\sqrt{3} }{3}$ → C

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For the binomial expansion of (x + y)^10, the value of k in the term 210x 6y k is a) 6 b) 4 c) 5 d) 7

Sloan [31]

Answer:

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Step-by-step explanation:

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Also

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I think you mean $210x^6y^4$

We can deduce that this term will be located somewhere in the middle. So I will calculate $k= 5; k=6 \text{ and } k =7$ .

For $k=5$

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