Trigonometry Sine Cosine Demonstration This resource provides animated

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Trigonometry – Sine & Cosine – Demonstration This resource provides animated demonstrations of the

Trigonometry – Sine & Cosine – Demonstration This resource provides animated demonstrations of the mathematical method. Check animations and delete slides not needed for your class.

A right-angled triangle has 4 parts. n e ot p y H Adjacent Hypotenuse

A right-angled triangle has 4 parts. n e ot p y H Adjacent Hypotenuse – always opposite the right-angle & always longest. Opposite e s u

SOH CAH 1) 2) 3) 4) A O H Sin θ Cos θ H

SOH CAH 1) 2) 3) 4) A O H Sin θ Cos θ H We want to find O. (so cover O) (H) 11 cm (O) Label the sides. Choose the ratio. Write the formula. Substitute & calculate. 48° cm

SOH CAH A O Sin θ 1) 2) 3) 4) H H Cos θ

SOH CAH A O Sin θ 1) 2) 3) 4) H H Cos θ We want to find H. (so cover H) (H) (O) 6 cm Label the sides. Choose the ratio. Write the formula. Substitute & calculate. 49° cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H We want to find A. (so cover A) (H) 14 cm (A) 23° Label the sides. Choose the ratio. Write the formula. Substitute & calculate. cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides.

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides. Choose the ratio. Write the formula. Substitute & calculate. H Cos θ We want to find H. (so cover H) (A) 2 cm 68° (H) cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ Label

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ Label the sides. Choose the ratio. Write the formula. Substitute & calculate. H (H) 13 cm (O) 11 cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H (A) 3 cm Label the sides. Choose the ratio. Write the formula. Substitute & calculate. 5 cm (H)

SOH CAH A O Sin θ 1) 2) 3) 4) H H Cos θ

SOH CAH A O Sin θ 1) 2) 3) 4) H H Cos θ We want to find H. (so cover H) (H) 22° Label the sides. Choose the ratio. Write the formula. Substitute & calculate. (O) 3 cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ Label

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ Label the sides. Choose the ratio. Write the formula. Substitute & calculate. H (H) 6 cm 4 cm (A)

SOH CAH A O Sin θ 1) 2) 3) 4) H H Cos θ

SOH CAH A O Sin θ 1) 2) 3) 4) H H Cos θ We want to find H. (so cover H) 4 cm (A) 50° (H) Label the sides. Choose the ratio. Write the formula. Substitute & calculate. cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H We want to find O. (so cover O) (O) Label the sides. Choose the ratio. Write the formula. Substitute & calculate. 4 cm 32° (H) cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ H We want to find A. (so cover A) (A) Label the sides. Choose the ratio. Write the formula. Substitute & calculate. 55° 11 cm (H) cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ Label

SOH CAH A O Sin θ 1) 2) 3) 4) H Cos θ Label the sides. Choose the ratio. Write the formula. Substitute & calculate. H (O) 8 cm 10 cm (H)

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides.

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides. Choose the ratio. Write the formula. Substitute & calculate. H Cos θ 11 cm 50° 8 cm 26° 16 cm 14 cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides.

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides. Choose the ratio. Write the formula. Substitute & calculate. H Cos θ 11 cm 50° 8 cm 26° 16 cm 14 cm

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides.

SOH CAH A O Sin θ 1) 2) 3) 4) H Label the sides. Choose the ratio. Write the formula. Substitute & calculate. H Cos θ 11 cm 8 cm 26° 50° 16 cm 14 cm

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk

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