Answer:
To find the inverse, interchange the variables and solve for y
f^−1(x)=−7x+7
Hope I helped :)
Multiplying by 2, the next one would be 160
It’s the third answer
(2x + 5) x ( 3x -4)
Given data
<span>sin (x+pi/2)=cos x
</span>now using sin law
sin(a+b)=sin(a)cos(b)+cos(a)sin(b)
now using above values
sin(pi/2+x)=sin(pi/2)cos(x)+cos(pi/2)sin(x)
as we know that
sin(pi/2)=1
cos(pi/2)=0
now putting these values
sin(pi/2+x)=1*cosx+0*1
sin(pi/2+x)=cosx
hence proved that
<span>sin (x+pi/2)=cos x</span>
2 - b.
3 - a.
I'm not sure about 4. Hope this helps!
