Упростить 1.Sin2B+cos4B-sin6B 2.cos2B+sin4B-cos6B

Question

Упростить
1.Sin2B+cos4B-sin6B
2.cos2B+sin4B-cos6B

Answer 1

1. cos4B-sin4B= 4(cos B-sin B)
2.sin4B-cos4B=4(sin B-cos B)