11th Std Maths Ex.3.7 (4)(ii) If A+B+C= π/2, P.T cos 2A+ cos2B+cos 2C = 1+4sinAsinBsinC

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11th Std Maths Ex.3.7(5)(i) &(ii) If ABC is a right angled Triangle and A= π/2, then P.T cos^2B + c 11th Std Maths Ex.3.7(5)(i) &(ii) If ABC is a right angled Triangle and A= π/2, then P.T cos^2B + c
11th Std Maths Ex.3.7(4)(i) If A+B+C= π/2 P.T sin2A + sin2B + sin2C = 4cosAcosBcosC 11th Std Maths Ex.3.7(4)(i) If A+B+C= π/2 P.T sin2A + sin2B + sin2C = 4cosAcosBcosC
11th Std Maths Ex 3.7(1)(iv) IF A+B+C = 180° PROVE THAT Sin^2A + sin ^2 B - sin^2 C = 2 sinA sinB co 11th Std Maths Ex 3.7(1)(iv) IF A+B+C = 180° PROVE THAT Sin^2A + sin ^2 B - sin^2 C = 2 sinA sinB co
11th Std Maths Ex 3.7(iii) IF A+B+C = 180° prove that sin^2 A +sin^2B+ sin^2 C = 2 + 2cosA cosB cosC 11th Std Maths Ex 3.7(iii) IF A+B+C = 180° prove that sin^2 A +sin^2B+ sin^2 C = 2 + 2cosA cosB cosC
TN Class Class 11 Maths | Exercise 3.7 Q.No.2 Trigonometry Chapter 3 | Tamil Nadu Syllabus AlexMaths TN Class Class 11 Maths | Exercise 3.7 Q.No.2 Trigonometry Chapter 3 | Tamil Nadu Syllabus AlexMaths
11th Std Maths Ex.3.7(1)(ii) IF A+B+C=180° PROVE THAT COS A+ COS B - COSC = -1 + 4COS A/2 COS B/2 SI 11th Std Maths Ex.3.7(1)(ii) IF A+B+C=180° PROVE THAT COS A+ COS B - COSC = -1 + 4COS A/2 COS B/2 SI
11th Std maths Ex.3.7(1) (vii) If A+B+C =180 P.T. sin(B+C-A)+sin(C+A-B)+sin(A+B-C)= 4sinAsinBsinC 11th Std maths Ex.3.7(1) (vii) If A+B+C =180 P.T. sin(B+C-A)+sin(C+A-B)+sin(A+B-C)= 4sinAsinBsinC
11th Std Maths Ex.3.7(5)(iii) If triangle ABC is right angled, cosB - cosC = -1 + 2√2 cosB/2 sin C/2 11th Std Maths Ex.3.7(5)(iii) If triangle ABC is right angled, cosB - cosC = -1 + 2√2 cosB/2 sin C/2