Use the gcf and the distributive property to express the sum as a product. 20+35

Factors of 20: 1; 2; 4; 5; 10; 20
Factors of 35: 1; 5; 7; 35

20 + 35 = 5 · 4 + 5 · 7 = 5 · (4 + 7)

5 · (4 + 7)

20000 as first it increases by 2500 then by 5000 so next it will increase by 10000

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.