Trigonometry

Сhoose the correct equality

• A

• B

Сhoose the correct equality

• A

• B

Сhoose the correct equality

• A

• B

Сhoose the correct equality

• A

• B

θ= 42^0. Calculate the third angle Φ

• 42⁰

• 138⁰

• 58⁰

• 48⁰

a=4, c=5

• cosα=4/5

• sinα=4/5

• sinα = 5/4

• tanβ=4/5

• cosβ=4/5

Сhoose the correct equality

• w = 28 × cos 40⁰

• w = 28 : sin 40⁰

• w = 28 × sin 40⁰

• w = 28 × tan 40⁰

a=8, b=6, c=10. Сhoose the correct equality

• cosα = 0.8

• sinβ = 0.8

• tanα = 4/3

• sinα = 5/4

cos∠A? Сhoose the correct equality.

• A

• B

• C

• D

tan∠C? Сhoose the correct equality.

• A

• B

• C

• D