Which value is similar to sin-1sin(6 π/7)?
Which value is similar to sin-1sin(6 π/7)? Correct Answer sin-1(π/7)
sin-1sin(6 π/7) Now, sin(6 π/7) = sin(π – 6 π/7) = sin(2π + 6 π/7) = sin(π/7) = sin(3π – 6 π/7) = sin(20π/7) = sin(-π – 6 π/7) = sin(-15π/7) = sin(-2π + 6 π/7) = sin(-8π/7) = sin(-3π – 6 π/7) = sin(-27π/7) Therefore, sin-1sin(6 π/7) = sin-1(π/7).
মোঃ আরিফুল ইসলাম
Feb 20, 2025