Question

sin 40º – cos 50º =साइन 40 डिग्री माइनस कॉस 50 डिग्री सी जी खोल दो ​

Answer 1

By the first quadrant triangle rule, the Cosine ∆, of an angle is equal to the Sine (90°-∆), of its complement.

Given ∆ = 50°, and Cos50° = 0.64,

Then Cos50° = Sin(90°-50°) = Sin40°

By the rule, Cos50° = Sin40°

Therefore, Sin40° = 0.64 (Ans)

hope it helps you

Answer 2

Here's your ans. dear ┌(・。・)┘♪