  O TRIGONOMETRIC IDENTITIES AND EQUATIONSMaxVerifying a trigonometric identityEspañolComplete the proof of the identity by choosing the Rule that justifies each stepcos2x-sin2x 2cos2x-1XTo see a detailed description of a Rule, select the More Information Button to the right of the Rule.RuleStatementsin xcOS xcos'x - ( - cosxАaRule?coS xCOS x21 + cos xRule?ECOS x- 2 cos.1Rule?X?1II TRIGONOMETRIC IDENTITIES AND EQUATIONSMaxVerifying a trigonometric identityEspañolComplete the proof of the identity by choosing the Rule that justifies each step.sin2x 2cos2x-12To see a detailed description of a Rule, select the More Information Button to the right of the RuleStatementRule22sin xCOS x(12AaRule ?ECOS XCOS x1cos xRule ?= COS x-RuleAlgebraReciprocalQuotientPythagorean?Odd/Even|4X

Question

See attachment help_outlineImage TranscriptioncloseO TRIGONOMETRIC IDENTITIES AND EQUATIONS Max Verifying a trigonometric identity Español Complete the proof of the identity by choosing the Rule that justifies each step cos2x-sin2x 2cos2x-1 X To see a detailed description of a Rule, select the More Information Button to the right of the Rule. Rule Statement sin x cOS x cos'x - ( - cosx Аa Rule? coS x COS x 2 1 + cos x Rule? ECOS x - 2 cos. 1 Rule? X ? 1II fullscreen help_outlineImage TranscriptioncloseTRIGONOMETRIC IDENTITIES AND EQUATIONS Max Verifying a trigonometric identity Español Complete the proof of the identity by choosing the Rule that justifies each step. sin2x 2cos2x-1 2 To see a detailed description of a Rule, select the More Information Button to the right of the Rule Statement Rule 2 2 sin x COS x (1 2 Aa Rule ? ECOS X COS x 1cos x Rule ? = COS x- Rule Algebra Reciprocal Quotient Pythagorean ? Odd/Even |4 X fullscreen
Step 1

Given,

Step 2

Now,

... help_outlineImage TranscriptioncloseL.H.S cos2x - sin2x cos2x (1 -cos2x) (sin20 =1 - cos20) = cos2x - 1 cos2x = 2cos2x - 1 = R.H.S Hence, proved by Pythagorean Rule fullscreen

Want to see the full answer?

See Solution

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Other 