With this, we know cos=x/r
x = 5
and
r = 6
We need to find y.
25 + y² = 36
y² = 11
y = √11
sin of theta would be √11/6
Answer:
-112.5
Step-by-step explanation:
2x - 50 = -275
2x = -225
x = - 112.5
Answer:
the point lies at (1.7, 3.6) in the first quadrant.
Step-by-step explanation:
The formula for a circle with centre (h,k) and radius (r) can be expressed as :
(x-h)² + (y-k)² = r²
Now for the expression of the circle with radius 3 and center (0,1), we have:
(x - 0)² + (y - 1)² = 3²
x² + (y-1)² = 9
replacing y = 1.5x + 1 in the above equation, we have:
x² + (( 1.5x + 1 ) - 1 )² = 9
x² + ( 1.5x +1 - 1)² = 9
x² + (1.5x)² = 9
x² + 2.25x² = 9
3.25x² = 9
x² = 9/3.25





x = 1.7 in the positive x - axis
Recall that:
y = 1.5x + 1
y = 1.5 (1.7) +1
y = 2.55 +1
y = 3.55
y = 3.6
Therefore, the point lies at (1.7, 3.6) in the first quadrant.
1. 1/2. 3+1/8 = 4/8 = 1/2
2. 1/4. 3+1/16 = 4/16 = 1/4