सिद्ध करें किsin^(2)85^(@)+sin^(2)80^(@)...

सिद्ध करें किsin^(2)85^(@)+sin^(2)80^(@)+sin^(2)10^(@)+sin^(2)5^(@)=2 | 10 | त्रिकोणमितीय तादात...

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Find the value of sin^(2)5^(@)+ sin^(2)10^(@)+ sin^(2)15^(@)+* * * +sin^(2)90^(@) .

Show that sin^(2)5^(@)+sin^(2)10^(0)+sin^(2)15^(0)+...+sin^(2)90^(@)=9(1)/(2)

sin10^(@)+sin20^(@)+sin40^(@)+sin50^(@)=sin70^(@)+sin80^(@)

sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+ .....+sin^(2)85^(@)+sin^(2)90^(@) is equal to

sin^(2)5^(@) + sin^(2)25^(@) + sin^(2)45^(@) + sin^(2) 65^(@) + sin^(2) 85^(@) is equal to:

The value of tan80^(@)tan10^(@)+sin^(2)70^(@)+sin^(2)20^(@) is

Value of cos^(2) 5^(@) + cos^(2) 10^(@) + cos^(2) 80^(@) + cos ^(2) 85^(@) is

sin ^ (2) 5 + sin ^ (2) 10 + sin ^ (2) 15 + ... + sin ^ (2) 180 =