Why don't we write sin theta ^2 But only write sin ^2 theta or (sin theta)^2 what is the difference - Maths - Introduction to Trigonometry

Question

Why don't we write sin theta ^2
But only write sin ^2 theta or (sin theta)^2 what is the
difference
Please give an appropriate answer as because somebody else also
answered this question which i couldn't understand Pls explain
And also is (cos theta )(cos theta )= cos^2 theta
Why explain

Sourav Kumar Sharma · Accepted Answer

Why don't we write sin theta ^2 But only write sin ^2 theta or (sin theta)^2 what is the difference . Please give an appropriate answer as because somebody else also answered this question which i couldn't understand . Pls explain And also is (cos theta )(cos theta )= cos^2 theta Why explain.

Why don't we write sin theta ^2
But only write sin ^2 theta or (sin theta)^2 what is the difference .
Please give an appropriate answer as because somebody else also answered this question which i couldn't understand . Pls explain
And also is (cos theta )(cos theta )= cos^2 theta
Why explain.