`sin76 5^(@)`

cos 40^(@)=0.76 then sin 50^(@) =………….

sin 50 ^(@) - sin 70^(@) + sin 10^(@) A)-1B)0C) sin 5^(@) D) -sin 5^(@)

Prove that: "sin"(pi)/(5)"sin"(2pi)/(5)"sin"(3pi)/(5)"sin"(4pi)/(5)=(5)/(16) "sin"36^(@) "sin"72^(@) "sin"108^(@) sin 144^(@)=(5)/(16) .

What is the value of (sin14^@)/(cos76^@) .

f(x)=(x-8)^4(x-9)^5,0lt=xlt=10 , monotonically decreases in (a) (76/9, 10] (b) (8, 76/9) (c) (0,8) (d) ((76)/9, 10)

f(x)=(x-8)^(4)(x-9)^(5),0<=x<=10 monotonically decreases in ((76)/(9,10)](b)((8,76)/(9))(0,8)(d)((76)/(9),10)

f(x)=(x-8)^4(x-9)^5,0lt=xlt=10 , monotonically decreases in (a) (76/9, 10] (b) (8, 76/9) (c) (0,8) (d) ((76)/9, 10)

f(x)=(x-8)^4(x-9)^5,0lt=xlt=10 , monotonically decreases in ((76)/(9, 10)] (b) ((8, 76)/9) (0,8) (d) ((76)/9, 10)