Use trigonometric identities to solve each equation within the given domain sec(x) cos(3x) = 0 from [- x /2 , x /2]

Either or .

Step-by-step explanation:

Angle sum identity for cosine:

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Double-angle identity for cosine and sine:

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The secant of an angle is the inverse reciprocal of the cosine of that angle:

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Apply these identities to rewrite the left-hand side of the equation.

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Solve the rewritten equation:

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Either or .

The question required that . The sine function is one-to-one over this range. In other words, for each between and , there is exactly one between and such that .

If and , then .

Otherwise, if and , then ,

Verify that for either of the two values, such that the in the original equation takes a real value.

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

savings account is an account only used for saving money. this acts as an emergency source of funding for an individual. answer a would result in the money in his account to grow as it specifically states that interest is compounded daily at the rate of 2%

step-by-step explanation: