Answer:
x = 4
Step-by-step explanation:
Answer:
10.5
Step-by-step explanation:
2x➕2y=6
2x➕2y ➖(2x➕3y)=6➖7
-y=-1
y=1
x=3➖1=2
The answer is cot² ∅ - csc² ∅ = -1
Referring to Pythagorean identities:
sin² ∅ + cos² ∅ = 1
1+cot² ∅ = csc² ∅
tan² ∅ + 1 = sec² ∅
1+cot² ∅ = csc² ∅
⇒ transposing 1 and csc² ∅ we will have now
cot² ∅ - csc² ∅ = -1