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Gelneren [198K]
3 years ago
12

Verify the identity. tan(θ) sin(θ) + cos(θ) = sec(θ)

Mathematics
1 answer:
MariettaO [177]3 years ago
4 0

Step-by-step explanation:

first of all

tan =  \ \frac{ \sin}{ \cos }

put above of equation

(sin/cos)(sin)+cos =sec

sin²/cos +cos=sec

take l.c.m

sin²+cos²/cos=sec

as sin ²+cos²=1 so

1/cos=sec

sec=sec

hence proved

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Solve 3(2x+2)=10x+4−4x+2.
kobusy [5.1K]

Answer:

The answer is D

Step-by-step explanation:

6 0
3 years ago
It costs $107 for 10 students and $137 for 15 students. How much does it cost for 12 students?
Anestetic [448]
\bf \begin{array}{ccccccccc}
&&\stackrel{students}{x_1}&&\stackrel{price}{y_1}&&\stackrel{students}{x_2}&&\stackrel{price}{y_2}\\
%  (a,b)
&&(~{{ 10}} &,&{{ 107}}~) 
%  (c,d)
&&(~{{ 15}} &,&{{ 137}}~)
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}\implies 
\cfrac{\stackrel{rise}{{{ y_2}}-{{ y_1}}}}{\stackrel{run}{{{ x_2}}-{{ x_1}}}}\implies \cfrac{137-107}{15-10}\implies \cfrac{30}{5}\implies \cfrac{6}{1}\implies 6

\bf \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-107=6(x-10)
\\\\\\
y-107=6x-60
\implies 
y=6x+47\\\\
-------------------------------\\\\
\textit{how much will it be for }\stackrel{x}{12~students?}\qquad y=6(12)+47
7 0
3 years ago
Flora needs 3/8 ribbon and 2/8 of a ribbon to make a bow tie How much ribbon does she need to make a bow tie
Black_prince [1.1K]

Answer:

Flora needs 5/8 ribbon

Step-by-step explanation:

7 0
3 years ago
Add.18 5/12+8 10/17+23 7/12+28 7/17 A.77 B. 77 1/2 C.78 1/2 D.79
Molodets [167]
Im pretty sure its D.79....Hope this helps 
6 0
3 years ago
What is the distance, to the nearest whole number, from K(5,6) to P(1,-4)
yarga [219]

Answer:

The distance between the two points is approximately 11 units

Step-by-step explanation:

Here, we are to give the distance between the given two points to the nearest whole number;

To calculate the distance, we shall be using the distance formula;

D = √(x2-x1)^2 + (y2-y1)^2

(x1,y1) = (5,6)

(x2,y2) = (1,-4)

D = √(1-5)^2 + (-4-6)^2

D = √((-4)^2 + (-10)^2

D = √(16+100)

D = √(116)

D = 10.77 units which is approximately 11 units

8 0
3 years ago
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