0 An equation is called an identity i trigonometric identity. is vaild forvalues

Question

0 An equation is called an identity i trigonometric identity. is vaild forvalues) of the variable. The squation 2x+x is an )ofthe veriable. The equation2x-x+xisanalgebraK identy, .nd the eeationsm+cosm- -is. Need Help? For any x iR is true that cou-x) has the same value as ces(x) we express this fact as the has the same value as -s) om(,). w" express this fact as the y -x)- Need Help? L98ads Write the trigonometric expression in tems of sine and cosine, and then simplafy. Need Holp? eLW Subt Arnwer Save Progress Prectice Anoter Version Write the trigonometrkc expression in terms of sine and cosine, and then simplify Need Help? RotN

Explanation / Answer

1)
EVERY

1

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2)
cos(x)

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3)
5cost * tant

5 * cost * (sint/cost)

5sintcost/cost

cost's cancel out :
5sin(t) ---> ANSWER

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4)
cost * csct

cost * 1/sint

cost/sint

cot(t)

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5)
sint * 1/cost

sint/cost

tan(theta) ---> ANSWER

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6)
SUM formula for sine

sin(x+y) = sin(x)cos(y) + cos(x)sin(y)

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7)
Difference formula for sine

sin(x-y) = sin(x)cos(y) - cos(x)sin(y)

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