配套习题- 两角和、差的正余弦公式 -【青果学院】

1/4单选题

难度：

1.

的值为（）

A
B
C
D

正确答案：Qg==

PHA+6Kej77ya5Y6f5byPPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzQ3LzE1L3JCQUNKbFRaVkpDeEVxRHVBQUFIRVIwdzRrdzAwMy5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNDcvMTUvckJBQ0psVFpWSkN4RXFEdUFBQUhFUjB3NGt3MDAzLnBuZyIgaGVpZ2h0PSIyMSIgd2lkdGg9IjQyMSI+PGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzQ3LzU4L3JCQUNKMVRaVkktRHp6WUZBQUFDX0wtaWQzbzI4Ni5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNDcvNTgvckJBQ0oxVFpWSS1EenpZRkFBQUNfTC1pZDNvMjg2LnBuZyIgaGVpZ2h0PSI0NSIgd2lkdGg9Ijk5Ij48YnI+PC9wPg==

2/4单选题

难度：

2.

sin 163°sin 223°＋sin 253°sin 313°等于（）

A
B
C	－
D

正确答案：Qg==

PHA+6Kej77ya5Zug5Li6c2luIDE2M8Kwc2luMjIzwrDvvItzaW4gMjUzwrBzaW4zMTPCsDxpbWcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83Qi9DOS9yQkFDRTFUWlZKYnhXdzhwQUFBSVViajQtOGcyNzMucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzdCL0M5L3JCQUNFMVRaVkpieFd3OHBBQUFJVWJqNC04ZzI3My5wbmciIGhlaWdodD0iNDEiIHdpZHRoPSI0NDMiPi48YnI+PC9wPg==

3/4单选题

难度：

3.

的值是（）

A
B
C
D	0

正确答案：Qg==

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

4/4单选题

难度：

4.

已知，则的值等于（）

A
B
C
D

正确答案：Qg==

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