All categories

3 years ago

Tan9 - tan27 - tan63 + tan 81 = ?

1 answer:

8 0

Tan9−tan27−tan63−tan81
tan9+tan81−tan27−tan63
sin9/cos9+sin81/cos81−sin27/cos27−sin63/cos63
sin90/cos81cos9−sin90/cos63cos27
1/sin9cos9−1/sin27cos27
2/sin18−2/sin54
(2)sin54−sin18/sin18sin54
4cos36sin18/sin18cos36=4

You might be interested in

Y varies directly as x and y=21 when x=6. determine the value of y when x=14

Hitman42 [59]

Answer:

y = 49

Step-by-step explanation:

Given y varies directly as x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 21 when x = 6 , then

21 = 6k ( divide both sides by 6 )

3.5 = k

y = 3.5x ← equation of variation

When x = 14 , then

y = 3.5 × 14 = 49

6 0

2 years ago

Please help me!<br> I already know the answer, I just need the equation

kherson [118]

E⁣⁣⁣⁣xplanation i⁣⁣⁣⁣s i⁣⁣⁣⁣n a f⁣⁣⁣⁣ile

bit. $^{}$ ly/3a8Nt8n

6 0

3 years ago

For every 15 campers at a summer camp there is 1 counselor.

katovenus [111]

Answer:

That would mean for every 30 campers there are 2 counselors and 45:3,60:4 and so on

Step-by-step explanation:

3 0

3 years ago

Check all the ordered pairs that satisfy the equation below. Y=6x

slava [35]

If $\frac{y}{x} = 6$ , then any ordered pair would satisfy the equation.
Since we're not given the ordered pairs, then this is the only information I can give to you.

3 0

3 years ago

The equation of a line given two points needs to be found. Samuel claims that slope-intercept form will generate the equation an

Nikitich [7]

Answer:

Helena is correct.

Step-by-step explanation:

The slope intersept form of the line is

y = m x + c

where, m is the slope and c is the intersept.

The point slope form of the equation is

$y - y'= \frac{y''-y'}{x''-x'}\times (x-x')$

So, if there are two points are given, the equation of line is found by the point slope form.

So, Helena is correct.

8 0

3 years ago