Cos A = adjacent/hypotenuse
= 10/26
Answer:
cot(x)
Step-by-step explanation:



Recall the Pythagorean Identity 
Answer:

Step-by-step explanation:
{у = 3х - 12
{4х + 6у = −6
4x + 6[3x - 12] = −6
4x + 18x - 72 = −6
−6 = −72 + 22x
+72 + 72
___________
66 = 22x
__ ___
22 22
[Plug this back into both equations above to get the y-coordinate of −3]; 
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First one has one solution
Second has infinite solutions
Third has no solutions.
Answer:
Step-by-step explanation:
for odd terms
first term=5
c.d.=8-5=3
odd terms are given by 5+3(n-1)=2+3n
for even terms
first term=10
c.d.=13-10=3
even terms are given by 10+3(n-1)=7+3n