SOLUTION: Can someone please help me with this question?! Thank you! Use an addition or subtraction formula to write tan21°+tan44°/1-tan21°tan44° as a trigonometric function of one n

Algebra ->  Trigonometry-basics -> SOLUTION: Can someone please help me with this question?! Thank you! Use an addition or subtraction formula to write tan21°+tan44°/1-tan21°tan44° as a trigonometric function of one n      Log On


   

Question 1169845: Can someone please help me with this question?! Thank you!
Use an addition or subtraction formula to write
tan21°+tan44°/1-tan21°tan44°
as a trigonometric function of one number.
You must enter your answer as a degree converted to radians.
Answer by ikleyn(52890) About Me  (Show Source):
You can put this solution on YOUR website!
.

The addition formula for the tangent says that


    tan(a+b) = %28tan%28a%29+%2B+tan%28b%29%29%2F%281-tan%28a%29%2Atan%28b%29%29.


In your case  a = 21°,  b = 44°.


From this point, you do the rest.