An integer is a whole number so 28 is the answer
Answer:
cos2t/cos²t
Step-by-step explanation:
Here the given trigonometric expression to us is ,
We can write the numerator as ,
Recall the identity ,
Using this we have ,
Again , as we know that ,
Therefore we can rewrite it as ,
Again using the first identity mentioned above ,
Or else we can also write it using ,
Therefore ,
And we are done !
Additional info :-
<em>D</em><em>e</em><em>r</em><em>i</em><em>v</em><em>a</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>o</em><em>f</em><em> </em><em>c</em><em>o</em><em>s</em><em>²</em><em>x</em><em> </em><em>-</em><em> </em><em>s</em><em>i</em><em>n</em><em>²</em><em>x</em><em> </em><em>=</em><em> </em><em>c</em><em>o</em><em>s</em><em>2</em><em>x</em><em> </em><em>:</em><em>-</em>
We can rewrite cos 2x as ,
As we know that ,
So that ,
On simplifying,
Hence,

Answer:
136
Step-by-step explanation
multiply 4 by 31 and add 20
Answer:
Step-by-step explanation:
The point of intersection of

and
is the solution of the two equations.
We add equation (1) and equation(2) to get,



We put
into equation (1) to get,




Therefore the line passes through the point,
.
The line also passes through the point of intersection of

and

We subtract equation (3) from equation (4) to obtain,



We substitute this value into equation (4) to get,





The line also passes through

The slope of the line is

The equation of the line is


is the required equation
Answer:
D) -9/4
Step-by-step explanation:
please refer to the picture I sent