Math, asked by hashmi76, 1 year ago

1. Evaluate :
sin 18°
cos 72°

Answers

Answered by yash2735

2

Step-by-step explanation:

sin18 is equal to cos 90 - 72 upon cos 72

cos 72 upon cos 72 is equal to 1 is the answer

Answered by gagagarg8

5

Answer:

sin 18 cos 72

= sin(90- 18) cos 72

= cos 72 cos 72= cos2 72

Step-by-step explanation:

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