3 years ago

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Mathematics

1 answer:

Darya [45]3 years ago

7 0

Answer: 6/5

Step-by-step explanation:

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Verify the identity. (cos x/ 1+ sin x) + (1+ sin x/cos x) = 2 sec x

Gekata [30.6K]

Answer:

LHS

$\frac{cos x}{1+ sin x} + \frac{1+ sin x}{cos x} \\=\frac{cos2(x)+1+2sin(x)+sin2(x)}{cos(x)(1+sin(x)} \\= \frac{2+2sin(x)}{cos(x)(1+sin(x))} \\\\=\frac{2 (1 + sin(x))}{cos(x)(1+sin(x))} \\= \frac{2}{cos (x)} \\= 2 sec x$

= RHS PROVED

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3 years ago

Which expression is equivalent to (5^3)^-2?

s2008m [1.1K]

Answer:

The Last One

Step-by-step explanation:

1/5 x 5 x 5 x 5 x 5 x 5

Because:

5 x 5 = 25

25 x 5 = 125

125 x 5 = 625

625 x 5 = 3125

3125 x 5 = 15625

And (5^3)^-2 is equal to 1/15625

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3 years ago

I need help with this

olganol [36]

Answer: 101.956

Step-by-step explanation:7.18•14.2= 101.956

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Veronique found the difference of a number and 8.

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8-n is the correct answer

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