2000004202 Level: COn the interval (−π2;π2), simplify the expression sin2x1−sin2x.2 tgxtgxtg2x1−tgx
2000004201 Level: COn the interval (0;π), simplify the expression 2sinx+sin2x2sinx−sin2x.1+cosx1−cosx1−cosx1+cosx1+cosx1−cosx
Signs of Trigonometric Functions II Submitted by ladislav.foltyn on Fri, 04/19/2019 - 16:56 Question: In each row, check the cell whenever the corresponding function takes a positive value.
Signs of the Trigonometric Functions I Submitted by ladislav.foltyn on Thu, 04/18/2019 - 10:45 Question: In each row, check the cell whenever the corresponding function takes a positive value.
Evaluating Expressions with Trigonometric Functions I Submitted by ladislav.foltyn on Sat, 02/23/2019 - 13:12