Question

please answer? please solution? (chapter- compound Angles)​

Answer 1

Answer:

1) the correct answer is 1 second option

2) the correct answer is -√3 second option

Answer 2

Step-by-step explanation:

5.

we know that tan(α+β)=tan(α) + tan(β)/1 - tan(α)+tan(β)

Putting α=100 β=125

tan(100+125 )= tan(100) + tan(125) = tan(225)

[tan(100) + tan(125)]/1- tan(100)×tan(125)

=>1

⇒1−tan100 × tan125 = tan100 + tan125

⇒tan100 × tan125 + tan100 + tan125 = 1

Therefore, Answer is 1