Question

Sin square 90 -theta

Answer 1

cos theta because 90 -theta mean we are in 1 st quadrant in 1 st quadrant all are positive and when we are subtracting with 90 and 270 then sin changes into cos ,cos to sine ,tan to cot ,cot to tan, sec to cosec ,cosec to sec thus it is cos theta

Answer 2

Answer:

Step-by-step explanation:

Sin 90 - theta = cos theta ( complementary relations)

Squaring both sides

Therefore sin square 90 - theta = cos square theta