Step-by-step explanation:
1/sin^2A -cos^2A/sin^2 A. ~tan = sin/cos
(1-cos^2)/sin^2A. ~ take lcm
sin^2A/sin^ A. ~ 1-cos^2A = sin^2A
1
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Answer:
0.397
Step-by-step explanation:
Hope this helps!❆
Answer:
21
Step-by-step explanation:
Let the dryer cost x.
Then, the washer costs (x-77)
Together, they cost (x) + (x-77) = 873
2x-77 = 873 [subtract 77 from both sides]
2x = 796
x = 398
So the dryer costs $398
