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| 1. |
Sin square theta + cos power 4 theta equal to cos squared theta + sin power 4 theta |
| Answer» Sin2+cos4=cos2+sin41-cos2 +(1-sin2)2=1-cos2 +1^2 +sin2^2- 2sin2=1- cos2 +1+sin4- 4sin2=1-cos2 +1 +sun4 - 4(1- cos2)= | |