Question

value of sin 90° is same as
a)sin 90
b)cos 0°
c) 90°
d) 90​

Answer 1

Answer:

Its cos 0° (option B)

Step-by-step explanation:

From the complementry relation, we know that;

sin A = cos (90 -A) (for some angle A)

If we take A = 90°.

We can state from the above relation that,

sin 90° = cos (90° - 90°);

Thus, sin 90° = cos 0°.

That's all.