cos28+sin28=k³then cos17=
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cos28+sin28=k^3
cos(90−62)+sin28=k^3
sin62+sin28=k^3
2sin(62+282)cos(62−282)=k^3
2sin45cos17=k^3
2×1/root2×cos17=k^3
√2×cos17=k^3
cos17=k^3/root2
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cos(90−62)+sin28=k^3
sin62+sin28=k^3
2sin(62+282)cos(62−282)=k^3
2sin45cos17=k^3
2×1/root2×cos17=k^3
√2×cos17=k^3
cos17=k^3/root2
hope it helps you. . . . . . follow me. . . . mark as a brainlist. . .
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