Question

sin 20=cos ?
please give me answer​

Answer 1

Step-by-step explanation:

The cosine of the other angle is its adjacent side (which is the same as the sine's opposite side) over the hypotenuse. So the sine of one angle is the cosine of the other. Since you know that in any triangle, the angles add up to 180, the missing angle is 180 - 90 - 20 = 70 degrees.