Answer:
cos²x.sec²x =1 (formula)
cos and sec are reciprocal to each other
cos²x=1/sec²x
now from the eq above,open the brackets and multiply
1-cos²2x
sin²2x
The answer is A, -4. Hope this helps!
it would be adding by 2's because to get from 2 to 4 you have to add two or from 6 to 8 you have to add two also
Answer:
3,900
Step-by-step explanation:
