Math, asked by shamithadevadiga693, 9 days ago

evaluate sin18 cos72 + cos18 sin72

Answers

Answered by EvilRage

1

Answer:

1

Step-by-step explanation:

Sin ( x+y) = sin x cos y + cos x sin y

Sin 18 cos 72 + cos 18 sin 72 = sin (72+18)

= sin (90)

= 1

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