3 years ago

How do you write the nth term rule for the sequence 1 , 3 , 5 , 7

1 answer:

5 0

basically the answer is 2n-1 2n comes from the difference to get from 1 to three and the -1 from 2n to get to 1 you need to minus 1 so you get -1

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Find the exact values of a) sec of theta b)tan of theta if cos of theta= -4/5 and sin<0

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Answer:

Using trigonometric ratio:

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From the given statement:

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then;

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$\tan \theta = \frac{\sin \theta}{\cos \theta}$

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$\tan \theta = \frac{-\frac{3}{5} }{-\frac{4}{5} } = \frac{3}{5}\times \frac{5}{4} = \frac{3}{4}$

Therefore, the exact value of:

(a)

$\sec \theta =-\frac{5}{4}$

(b)

$\tan \theta= \frac{3}{4}$

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