If θ

θ

is an acute angle of a right triangle and

tan θ=

3

5

tan⁡ θ=35

, what is the value of

cosθ

cos⁡θ

?

Given:

In a right angle triangle θ is an acute angle and .

To find:

The value of .

Solution:

In a right angle triangle,

We have,

It means the ratio of perpendicular to base is 3:5. Let 3x be the perpendicular and 5x be the base.

By using Pythagoras theorem,

In a right angle triangle,

Therefore, the value of is .

i dont understand the question? ?

step-by-step explanation:

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.