ANSWER
See explanation.
EXPLANATION
We want to very the identity:
Let us take the Left hand side and work it out to get the right hand side.
Recall the Pythagorean Identity:
Make cos²(x) the subject.
We substitute this into our expression to get:
Expand:
Simplify
We can rewrite to get;
Therefore:
Answer:
B. (1,7)
Step-by-step explanation:
Answer is B. (1,7)
If x = 1 then
y > 1 + 5
7 > 6
Method is not mentioned , so
3x - 2y = 12 -----: ( 1 )
6x - 4y = 24 -----: ( 2 )
Now,
= > 24 = 24
= > 2( 12 ) = 24
= > 2( 3x - 2 y ) = 6x - 4y
= > 6x - 4y = 6x - 4y
RHS = LHS
Hence, the equation has infinitely many solutions.