SOLUTION: Compute (sin 20)(tan 10+cot 10)

Question 1112840: Compute (sin 20)(tan 10+cot 10)
Found 3 solutions by Alan3354, greenestamps, ikleyn:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
do that
Answer by greenestamps(13214)   (Show Source): You can put this solution on YOUR website!

Sorry we have so many "tutors" here who think they are being funny by giving useless responses to your real questions....

= (change everything to sin and cos)

= (add the fractions with a common denominator)

= (sin^2+cos^2=1)

=

= (double angle formula for sin)

=
Answer by ikleyn(52900)   (Show Source): You can put this solution on YOUR website!
.
What is interesting in this problem that you can read "20" as 20 degrees or 20 radians - the results is the same 2 independently of an unit.

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