2 years ago

Write the expression as the sine, cosine, or tangent of an angle.

Mathematics

1 answer:

Naily [24]2 years ago

4 0

Step-by-step explanation:

the formula is :

tan (a+b) =

(tan (a) + tan (b)) / ( 1 - tan (a) . tan (b))

therefore

tan (π/5) + tan (π/2)) / (1-tan (π/5) tan (π/2))

= tan (π/5 + π/2)

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Find the points where the line y = x - 1 intersects the circle x2 + y2 = 13

nata0808 [166]

Answer:

(-2,-3) and (3,2)

Step-by-step explanation:

sub in x-1 into y

x^2 + (x-1)^2 = 13

x^2 + (x-1)(x-1)=13

x^2 + x^2 -2x +1 = 13

2x^2 -2x-12=0

solve for x by factoring (quadratic formula, product sum etc..)

x= -2 and 3

plug in those values into y=x-1 and solve for y

3 0

3 years ago

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Find the measure of <0

TEA [102]

answer is C

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7 0

3 years ago

A basket contains 11 pieces of fruit for apples five oranges and two bananas Jonas takes a piece of fruit at random from the bas

wariber [46]

Answer:

the chances are 5/11

Step-by-step explanation:

4 0

3 years ago

.<br> Name the property the equation illustrates.<br><br> 7 + (4 + 4) = (7 + 4) + 4

vazorg [7]

Reflective property

6 0

3 years ago

A hat contains pieces of paper marked with the numbers 1 through 16. Tell whether picking an even number is impossible, unlikely

Anna [14]

Answer:

Picking an even number is an as likely event and it's probability is 1/2

Step-by-step explanation:

We know that the numbers present are 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16

The odd numbers are 1,3,5,7,9,11,13,15

The even numbers are 2,4,6,8,10,12,14,16

There are 8 even numbers and 8 odd numbers.

And also if we pick a number it should be either an even number or an odd number.

Probability(Getting an even number) = $\frac{even number}{even number+oddnumber}$

Probability = $\frac{8}{8+8}$ = 1/2

Therefore picking an even number is an as likely event and it's probability is 1/2

6 0

3 years ago