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sleet_krkn [62]

2 years ago

6

Verify this identity: secx-cosx = 1-cos^2x/cosx

1 answer:

Sauron [17]2 years ago

5 0

Step-by-step explanation:

sec x − cos x

Secant is the inverse of cosine:

(1 / cos x) − cos x

Find the common denominator:

(1 / cos x) − (cos² x / cos x)

Subtract:

(1 − cos² x) / cos x

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2 years ago

Divide and simplify 9/8 divide 9/7

oksian1 [2.3K]

Answer:

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Step-by-step explanation:

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3 years ago

the price of a cup of coffee has dropped to $2.20 today. Yesterday's price was $2.35. Find the percentage decrease. Round your a

notka56 [123]

Answer:

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Step-by-step explanation:

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2 years ago