1) 2
2) 3
3) 4
4) 7
Hope this helps ^-^
Answer:
1
Step-by-step explanation:
Using the trigonometric identities
tan(90 - x) = cotx , cotx = 
Given
tan1tan2tan3....................... tan87tan88tan89
= tan1tan2tan3............... tan(90-3)tan(90-2)(tan90 - 1)
= tan1tan2tan3.............. cot3cot2cot1
= tan1cot1tan2cot2tan3cot3 ........................
= 1 × 1 × 1 ×....................... × 1
= 1
Answer:
f(x) is a one to one function.That maps out one function to another ,and it therefore passes both the vertical and horizontal I ine test
The reflection across the x-axis only change the signal of the y coordinate. Hence, the new point is

.