[ 3 − 2 + (3 − 2) − (2 − 3) ]− (2 − 3) + (3 – 9)

Mathematics

2 answers:

aev [14]1 year ago

7 0

Answer:

the answer is -2

just 1st solve brackets and then solve it

Step-by-step explanation:

(1 + 1 - -1 ) - -1 + -6

3 --1 = 4

4+ - 6 = -2

Elina [12.6K]1 year ago

3 0

Answer:

(1 + 1 - -1 ) - -1 + -6

3 --1 = 4

4+ - 6 = -2

Answer: - 2

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Step-by-step explanation:

$\text{Use:}\\\\\sin^2\theta+\cos^2\theta=1\to\cos\theta=\pm\sqrt{1-\sin^2\theta}\\\\\tan\theta=\dfrac{\sin\theta}{\cos\theta}\\\\\sec\theta=\dfrac{1}{\cos\theta}\\\\==========================\\\\\sin\theta=-\dfrac{5}{7}\\\\\cos\theta=\pm\sqrt{1-\left(-\frac{5}{7}\right)^2}=\pm\sqrt{1-\frac{25}{49}}=\pm\sqrt{\frac{24}{49}}=\pm\dfrac{\sqrt{24}}{\sqrt{49}}=\pm\dfrac{\sqrt{24}}{7}\\\\\sec\theta=\pm\dfrac{1}{\frac{\sqrt{24}}{7}}=\pm\dfrac{7}{\sqrt{24}}$

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