Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
to prove that (r=1 to r=7) ∑tan 2 r∏/16=(r=1 to r=7)∑cot 2 r∏/16=35 to prove that (r=1 to r=7)∑tan2r∏/16=(r=1 to r=7)∑cot2r∏/16=35
to prove that
(r=1 to r=7)∑tan2r∏/16=(r=1 to r=7)∑cot2r∏/16=35
Hello Student, Please find the solution(r=1 to r=7)∑tan2r∏/16= tan2∏/16 + tan22∏/16+ tan23∏/16+ tan24∏/16+ tan25∏/16+ tan26∏/16+ tan27∏/16rearranging terms=tan2∏/16+ tan27∏/16+ tan22∏/16+ tan26∏/16+ tan23∏/16tan25∏/16+ tan24∏/16[Now, tan24∏/16 = tan2∏/4 = 1]Also,tan2∏/16+ tan27∏/16= tan2∏/16+ cot2∏/16=now you can convert to sine, cosine and find the ansthanks,All the best
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -