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Can anyone help me on this task sin75°.cos75°=​

Can anyone help me on this task sin75°.cos75°=​
asked 196k views
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Can anyone help me on this task sin75°.cos75°=​

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User KindaTechy
by
7.8k points

2 Answers

6 votes

The answer is attached.

Can anyone help me on this task sin75°.cos75°=​-example-1
answered
User Matthew Plourde
by
8.2k points
4 votes

Answer:0.25

Explanation:

Sin75.cos75

From trigonometric identity we know that: sin2x=2sinxcosx

sinxcosx=(sin2x) ➗ 2

Sin75cos75=(sin(2x75)) ➗ 2

Sin75cos75=(sin150) ➗ 2 but sin150=0.5

Sin75cos75=0.5 ➗ 2

sin75cos75=0.25

answered
User Rcpinto
by
8.3k points
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