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ICSE Class 10 Answered

Solve the question 
question image
Asked by debabratap261 | 23 Feb, 2019, 06:24: PM
answered-by-expert Expert Answer
sin 10θ = cos 8θ
sin 10θ = sin (90 - 8θ)
10θ = 90 - 8θ
18θ = 90
θ = 5
tan 9θ = tan 45 = 1
Answered by Sneha shidid | 23 Feb, 2019, 07:48: PM

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