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.
9^2 < 6^2 + 8^2
so its acute angled.
How much does the molding paper cost. Work out the area of the ceiling which is 15 x 20 and multiply it by the price of the molding paper
Step-by-step explanation:
is similar to 
so we can write the ratio
Solving for x, we get
Hello u,
on monday⇒25pants
tuesday⇒37pants
u agree that there is an increase in sail from monday to tuesday.this increase is calculated as follows,
%increase=[(number of pants sold on tuesday-pants sold on monday)/number of pants sold on monday]*100=48%
goodluck
