ICSE Class 10 - Trigonometric Ratios of Complementary Angles Videos

• prove that
  
• find  x if :- sin 47 sec 43 +cos43 cosec 47- cos square 45 ° =0
• Question 6th
  
• sec A(1 -sec A)(sec A + tan A)= 1
• Solve the question 
  
• If sin A+cos A=√2 sin(90-A),show that cot A=√2+1

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