1)If sinπ÷18sin5π÷18sin7π÷18=2) os56+cos58 − cos66−4cos28cos29sin33=
Saisindhujach , 5 Years ago
Grade 11
Trigonometry> 1)If sinπ÷18sin5π÷18sin7π÷18= 2) os56+cos...
1 AnswersVikas TU
Last Activity: 5 Years ago
Hiii Saisindhuja
Sin180 = 0
Sin 5*180 = 0
Sin 7*180 = 0
So, the 1 st ans will come as 0.
2). Put all values in the equation you will get the ans as : -1 .
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