2 years ago

Anyone, please help me!!!

Mathematics

2 answers:

lianna [129]2 years ago

7 0

Answer:

Step-by-step explanation:

Hint: 1- 2sin²x = Cos 2x

LHS = 1 - 2Sin² (π/4 - Ф/2)

= Cos 2 *(π/4 - Ф/2)

= Cos 2*π/4 - 2*Ф/2

= Cos π/2 - Ф

= Sin Ф = RHS

mart [117]2 years ago

3 0

Answer:

RHS=sinA

Step-by-step explanation:

LHS=1-2sin^2(45-A/2)

=cos2(45-A/2)

=cos(90-A)

=sinA proved.

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2 years ago

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Vinil7 [7]

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2 years ago

What is the opposite of 6/7

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dezoksy [38]

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2 years ago

Any pointers on how to solve (-124) + 25 + (-87)

Elena-2011 [213]

|-124| + 25 + |-87|

124+25+87

236

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3 years ago

Anyone, please help me!!!​

Anyone, please help me!!!