Answer:
Option (a)
2x-10
Step-by-step explanation:
Area of shaded region= area of square - area of rectangle..
= s×s - l×b
= 2x -10...
-90 degrees = 270 degrees
You can use the unit circle to find this value, if you wish.
sin(-90) = -1
Answer is A
Just make sure you do know how to do them :)
Answer:
y =
Step-by-step explanation:
using the addition formula for sine
sin(x + y) = sinxcosy + cosxsiny
then
sinxcosy + cosxsiny = sinx + cosx
for the 2 sides to be equal , then
cosy = and siny =
then
y = ( ) =
and
y = ( ) =
thus y =