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3 years ago

What is sin theta when cos theta is 0

Mathematics

1 answer:

8_murik_8 [283]3 years ago

7 0

Answer:

Divide by costheta

You get Sin(theta)/Cos(theta) + Cos(theta)/cos(theta) =0

[Sinx/cosx = tanx (a law of trigs)]

so the same as tan(theta) + 1=0

So tan(theta)=-1

Inverse tan/arctan (-1) =3/4 pi and (2pi - 3/4pi) = 7/4pi

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Part 22) Find the perimeter and area

step 1

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we have

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Remember that

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step 2

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we have

$L=5(a^2)(b^4)\ units$

$W=3(a)(b^2)\ units$

substitute in the formula

$P=2(5(a^2)(b^4)+3(a)(b^2))$

$P=10a^2b^4+6ab^2\ unit$

Part 24) Find the perimeter and area

step 1

The area of triangle is equal to

$A=\frac{1}{2}bh$

where

$b=8mn\ units$

$h=4m^2\ units$

Remember that

When multiply exponents with the same base, adds the exponents and maintain the base

substitute the given values

$A=\frac{1}{2}(8mn)(4m^2)$

$A=16m^3n\ units^2$

step 2

Find the perimeter

I will assume that is an equilateral triangle (has three equal length sides)

The perimeter of an equilateral triangle is

$P=3b$

where

$b=8mn\ units$

substitute

$P=3(8mn)$

$P=24mn\ units$

Part 26) Find the area

The area of a circle is equal to

$A=\pi r^{2}$

where

$r=3x^3y\ units$

Remember the property

$(a^{m})^{n}=a^{m*n}$

substitute in the formula the given value

$A=\pi (3x^3y)^{2}$

$A=9\pi x^6y^{2}\ units^2$

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