Verify the identity. 1+tan x/sin x + cos x= sec x

Step-by-step explanation:

Taking left hand side:

1/cos x is equal to sec x.

So,

Hence proved ..

sounds & other waves originate from any vibrating object

soo this can be solve by using the formula:

f = p( 1 + i)^ n

where f is the future profit

p is the initial profit

i is the percent increase

n is the number of years

a . f = 30000 ( 1.05)^n

b. f = 30000 ( 1.05)^15

f = $62,368