If there is no expression, it surely is equal to 0.
49 degrees would be the correct answer!
Answer:
if you want to sketch the trapezoid you will also need other dimensions like height and the length of the parallel sides
Answer:
see explanation
Step-by-step explanation:
Using the trig identity
sin²x + cos²x = 1 , then
sin²x = 1 - cos²x
cos²x = 1 - sin²x
Consider the left side
sin²A - cos²B
= (1 - cos²A) - (1 - sin²B) ← distribute parenthesis
= 1 - cos²A - 1 + sin²B
= sin²B - cos²A
= right side , thus verified
Answer:
Step-by-step explanation:
Hi there!
Expand the parentheses
I hope this helps!
