Answer:
Step-by-step explanation:
It is given that and is in the fourth quadrant.
So, only will have positive value and , will have negative value.
Now,
⇒ (Answer)
We know, that
⇒
{Since, is positive then will also be positive}
⇒ (Answer)
We know, that
⇒
{Since, is negative then will also be negative}
⇒ (Answer)
Answer:
C^2=A^2+B^2
=11.87^2+18^2
= 140.90+324
= 464.9
C= square root of 464.9
= 21.56, the hypotenuse
Siny= 18/21.56
= 0.835
y =Sin^-1(0.835)
=56.62
Sinx= 11.87/21.56
=0.551
x =Sin^-1(0.551)
= 33.44
thats one way, i chose a longer way cuz i think its better to go through the steps
Step-by-step explanation:
Sin=opp/hyp
Cos=adj/hyp
Tan=opp/adj
you can use these to solve it other ways
Answer: -a2b2 + 9a2 + 24ab + 4b2 - 36
Step-by-step explanation:
A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
AB = BA is the commutative property of multiplication.
- AB + AB equals zero and is therefore eliminated from the expression.
Pharaphrase it if used.
Answer: try cross multyplying. It really helps
Step-by-step explanation: