Given that,
ABC is a right angle triangle, C is the right angle.
To find,
cosB = ?
Solution,
The sum of angle of a triangle is equal to 180 degrees. So,
∠A + ∠B + ∠C = 180°
Put ∠C = 90°
∠A + ∠B + 90° = 180°
∠A + ∠B = 90°
Taking cos with each term.
cosA+cosB = cos (90)
cosA+cosB = 0
cosB=-sinA
Hence, cosB = sinA.
Step-by-step explanation:
So first we will multiply
(2xy)(3y)
=
Answer:
she read 25 pages in 60 minutes
Step-by-step explanation:
Answer:
Range is 1<x because there are arrow pointing away
Step-by-step explanation:
Brainliest? Just need 2 more
