Is there any option to choose from ?
If so show them and I’ll probably be able to answer .
AC = x, CD = 2x cause of 30° angle. Use pythagoras then
Answer:
B(2,3),C(2,-3)
Step-by-step explanation:
On y-axis symmetry有手就行
Answer:
I and IV
Step-by-step explanation:
Since 1-sin(θ)² = cos(θ)², the given equation is equivalent to ...
√(cos(θ)²) = |cos(θ)| = cos(θ)
This will be true where the cosine is non-negative, in the first and fourth quadrants.