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00
Use sum-to-product formulas to evaluate sin75°- sin45°
0.25
-1/2\sqrt{2}2
0.158
Use sum-to-product formulas to evaluate cos90°- cos45°
1/4
Use sum-to-product formulas to evaluate cos75°- cos45°
-0.44
Use sum-to-product formulas to evaluate cos30°- cos45°
1/2
Use sum-to-product formulas to evaluate cos30°+ cos45°
1.57
Use sum-to-product formulas to evaluate sin90°+ sin45°
(2+1)2\frac{\left(\sqrt{2}+1\right)}{\sqrt{2}}2(2+1)
Use sum-to-product formulas to evaluate cos75°+ cos45°
0.96
Use sum-to-product formulas to evaluate cos90°+ cos45°
1/2\sqrt{2}2
Use sum-to-product formulas to evaluate sin90°- sin45°
(2−1)2\frac{\left(\sqrt{2}-1\right)}{\sqrt{2}}2(2−1)
It is done.